Product Specification

12MM*200M 3 Strand Polyester Twisted Marine Rope 1/4 Inch Soft Multifilament 3 Strand Twisted Rope Nylon Mooring Anchor Rope

1.PHOTOS

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 & Filament Extrusion

• Polyester/Nylon Pellet Melting: High-quality polyester or nylon pellets (selected for marine-grade durability, UV resistance, and water repellency) are fed into an extruder. The pellets are heated to a molten state (around 250–280°C for polyester, 220–260°C for nylon) to form a continuous, viscous polymer melt.
• Multifilament Spinning: The molten polymer is forced through a spinneret (a metal plate with hundreds of tiny holes) to create thousands of thin, continuous filaments. These filaments are cooled immediately using air or water to solidify them into soft, flexible multifilaments—critical for achieving the rope’s “soft” texture.
• Filament Drawing & Heat Setting: The solidified multifilaments are stretched (drawn) to align their molecular structure, enhancing tensile strength and reducing elongation. They are then heat-set at a controlled temperature to lock in their shape, preventing shrinkage and maintaining flexibility even in marine environments.

Step 2: Yarn Plying (Strand Formation)

• Multifilament Bundling: Multiple soft multifilaments are grouped into a single “tow” (a thick bundle of filaments). The number of filaments per tow is calibrated to achieve the target thickness for the 12MM rope’s individual strands.
• Twisting for Strand Strength: Each tow is twisted in a consistent direction (e.g., right-hand twist) using a stranding machine. This twisting compacts the multifilaments, forming a cohesive, strong strand. For the 3-strand rope, three identical strands are produced, each with uniform thickness and twist tightness to ensure balanced load distribution later.

Step 3: 3-Strand Twisting (Rope Forming)

• Strand Alignment: The three pre-twisted strands are fed into a rope-twisting machine, where they are aligned parallel to each other. The machine rotates the strands in the opposite direction of their individual twist (e.g., left-hand twist if strands were right-twisted)—a process called “counter-twisting” that creates interlocking friction between strands.
• Tension Control & Diameter Calibration: Throughout twisting, precise tension is maintained on each strand to avoid uneven stretching or slack. The machine is adjusted to ensure the final rope reaches the exact 12MM (1/4 Inch) diameter, with a tight, uniform twist that prevents strand separation under load.

Step 4: Post-Processing & Quality Inspection

• Washing & Drying: The newly formed rope is washed to remove any residual oils or contaminants from extrusion and twisting. It is then dried thoroughly to eliminate moisture, which could cause mildew or fiber degradation during storage.
• Marine-Grade Treatment: Optional treatments may be applied, such as UV inhibitors (to enhance sun resistance) or anti-fouling coatings (to reduce saltwater buildup). These treatments are tailored to boost performance in marine conditions without compromising the rope’s softness.
• Length Cutting & Winding: The continuous rope is cut into 200M lengths using precision cutting tools. Each 200M section is wound onto spools or coils, with protective end caps to prevent fraying of the rope’s terminals.
• Quality Testing: Samples from each batch are tested for key properties: tensile strength (to ensure it meets marine load requirements), abrasion resistance (using friction tests against metal or concrete), water absorption (measuring weight gain after submersion), and flexibility (checking for kinking or brittleness). Only ropes passing all tests proceed to packaging.

Step 5: Packaging

• The 200M coils/spools are wrapped in moisture-resistant material (e.g., polyethylene film) to protect against dust, moisture, and damage during transportation. Labels are added to indicate specifications (12MM*200M, 3-strand, polyester/nylon, marine use) for end-user clarity.

2. Application Scope

Marine & Boating Applications

• Mooring Lines: Ideal for securing small to medium boats (e.g., fishing boats, sailboats, recreational powerboats) to docks, piers, or buoys. The 3-strand twisted structure provides stable grip on cleats, while polyester/nylon’s water resistance prevents weight gain from saltwater—ensuring reliable hold even in tides or light winds.
• Anchor Lines: Suitable for anchoring vessels in calm to moderately rough waters (e.g., lakes, coastal bays). The soft multifilament texture avoids damaging the boat’s hull or anchor hardware, and the rope’s tensile strength (from twisted strands) keeps the anchor securely set on sand, mud, or gravel seabeds.
• Dinghy/Tender Towing: Used to tow small dinghies or tenders behind larger boats. Its flexibility allows easy handling during deployment, and polyester/nylon’s durability resists abrasion from wave action or contact with the towed vessel.
• Fender Lines: Secures boat fenders (to protect hulls from dock impacts) to cleats or railings. The soft multifilament material prevents scratches on the boat’s surface, while the rope’s twist ensures fenders stay in place without slipping.

Recreational & Outdoor Applications

• Water Sports Tow Ropes: Suitable for light water sports (e.g., tubing, beginner water skiing) in lakes or coastal areas. The soft texture reduces discomfort for riders, and the 3-strand design withstands the occasional jolts from wave movement.
• Camping & Marine Camping Gear Securement: Used to secure tents, tarps, or camping gear on boat decks or coastal campsites. Its water resistance keeps gear dry during rain, and the twisted strands hold knots (e.g., bowline, cleat hitch) securely in windy conditions.
• Swimming Area Markers: Creates temporary boundaries for swimming zones (e.g., near marinas or beach clubs) by tying to buoys. The 12MM diameter is visible in water, and polyester/nylon’s UV resistance prevents degradation from prolonged sun exposure.

Light Industrial & Utility Applications

• Marina Maintenance: Used for light tasks in marinas, such as pulling small maintenance tools (e.g., brushes, hoses) to boats or securing temporary safety barriers around work areas. The soft multifilament avoids damaging boats or equipment, while the rope’s length (200M) covers most marina dock spans.
• Small Vessel Repair: Serves as a temporary tie-down for boat parts (e.g., covers, loose hardware) during on-water repairs. Its flexibility allows it to wrap around irregular shapes, and water resistance ensures it remains usable even if splashed during repairs.
• Aquaculture Support: Used in small-scale aquaculture (e.g., fish farms, oyster beds) to secure floating nets or markers. The rope’s resistance to saltwater corrosion and marine organisms (e.g., barnacles) ensures long-term use in coastal or offshore aquaculture setups.