3 Strand Twisted Yellow Blue White Color Polypropylene pp Marine Ropes Shipping Rope

Production Process

Step 1: Polypropylene (PP) Resin Preparation & Color Masterbatch Mixing

Step 2: Melting, Extrusion & Monofilament Formation

Step 3: Monofilament Drawing & Strengthening

Step 4: Strand Plying (Forming 3 Colored Strands)

• One strand is made entirely of yellow monofilaments,
• One strand of blue monofilaments,
• One strand of white monofilaments.

Step 5: 3-Strand Twisting (Final Rope Formation)

Step 6: Post-Processing, Inspection & Winding

• Checks include measuring diameter consistency, testing tensile strength, verifying color uniformity, and ensuring no strand breakage.
• Qualified ropes are then wound onto large spools or coils (in lengths tailored to shipping/marine needs, e.g., 100m, 500m) for storage and transportation. No additional chemical treatments are required, as PP’s inherent properties already meet marine/shipping standards.

2. Application Scope

Marine Mooring & Docking

• Used as mooring lines and dock lines for small to medium-sized vessels (e.g., fishing boats, recreational yachts, small cargo ships). The 3-strand twisted structure provides sufficient flexibility to tie secure knots (e.g., cleat hitch, bowline), while PP’s water resistance prevents rot or weight gain from seawater. The yellow-blue-white coloration enhances visibility, making the rope easy to spot in low-light or choppy water—reducing the risk of accidental tripping on decks or tangling with other equipment.

Shipping Cargo Securement

• Ideal for securing cargo on ships, barges, or docks. It is used to tie down containers, pallets, or loose goods (e.g., machinery parts, construction materials) during transit. PP’s high tensile strength resists shifting caused by wave motion or ship vibration, while the twisted structure ensures the rope stays tight without slipping. The lightweight nature of PP also makes it easy for crew members to handle and adjust, even when securing heavy loads.

Marine Recreational & Auxiliary Use

• Applied in recreational marine activities, such as:
  • Tying inflatable water toys (e.g., tubes, rafts) to boats;
  • Setting up temporary swimming area markers (the bright yellow-blue-white colors improve visibility for swimmers and other vessels);
  • Securing fenders (boat bumpers) to hulls to prevent damage during docking.
    Its non-abrasive surface also avoids scratching boat paint or inflatable materials.

Small Vessel Towing & Assistance

• Used for light-duty towing of small vessels (e.g., dinghies, jet skis) behind larger boats in calm coastal waters or harbors. The 3-strand design’s strength handles the tow load, while PP’s elasticity absorbs minor shocks from wave action—reducing strain on both the towing and towed vessels. The coloration ensures the rope is visible to nearby boats, minimizing collision risks.

Port & Dock Maintenance

• Employed in port and dock maintenance tasks, such as:
  • Securing temporary barriers (e.g., to block off construction zones on docks);
  • Tying down maintenance equipment (e.g., hoses, tools) to prevent loss overboard;
  • Assisting in lifting light components (e.g., small metal parts, cleaning supplies) using pulleys.
    Its resistance to saltwater and UV radiation ensures longevity, even with constant exposure to marine environments.

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