Static rope

polyesterpolyolefinabrasion-resistant

Overview
The double-fiber braided mooring rope combines an outer layer of premium polyester fibers (minimum 40% by weight) with a high-strength polyolefin core (approx. 60% by weight). This hybrid construction balances abrasion resistance, UV protection, flotation, chemical resistance, strength and cost-effectiveness for marine operations.

Key Benefits

• Outer polyester layer provides abrasion resistance and UV protection.
• Polyolefin core (polypropylene or polyethylene) delivers lightweight handling, natural flotation and chemical resistance.
• Hybrid design reduces weight versus pure polyester while maintaining comparable breaking loads and extending service life.

Applications

• Port operations: high abrasion resistance and UV protection for frequent deployment and retrieval.
• Towing & salvage: flotation improves recovery and visibility; lightweight enables faster deployment.
• Offshore & anchoring: chemical resistance and extended service life in harsh marine environments.
• Emergency rescue: reliable performance and ease of handling under rapid-deployment conditions.

Engineering: Hybrid Architecture
Outer Layer - Polyester Fiber Protection

• Premium-grade polyester fibers form a tightly braided outer protective layer.
• Minimum 40% of total rope weight is polyester to ensure abrasion protection and UV resistance.
• Outer layer shields the core from abrasion, UV exposure, chemical attack and saltwater degradation.

Inner Core - Polyolefin Fiber Performance

• High-strength polyolefin fibers (PP or PE) form the inner core.
• Polyolefin typically comprises ~60% of rope weight and supplies the majority of breaking strength.
• Core provides natural flotation, lightweight handling, superior resistance to saltwater and chemicals, and cost advantages over pure polyester.

Why This Architecture Works

• Synergistic benefits: superior durability compared to single-material ropes, extended service life (typically 4–6 years) and improved overall performance across applications.
• Optimized material ratio (min. 40% polyester / ~60% polyolefin) balances protection, flotation, weight and cost.

Manufacturing & Quality Control
The rope is produced using high-tenacity fibers for both polyester and polyolefin. Strands for each fiber type are manufactured separately and combined in a controlled braiding process with precise tension and diameter control. Every rope undergoes testing: diameter verification, weight per 200m verification, breaking load to destruction, elongation testing, flotation testing and accelerated UV exposure testing.

Performance Characteristics: Breaking Load Performance
Diameter (mm) | Circumference (inches) | Weight/200m (kg) | Breaking Load (kN) | Breaking Load (tons)
44 | 5-1/2 | 188 | 277 | 28.25
60 | 7-1/2 | 350 | 502 | 51.2
80 | 10 | 622 | 867 | 88.43
100 | 12-1/2 | 965 | 1,340 | 136.73
120 | 15 | 1,396 | 1,890 | 192.78
140 | 17-1/2 | 1,905 | 2,530 | 258.16

Weight Comparison: Hybrid vs. Pure Polyester (examples)
Diameter (mm) | Hybrid Weight/200m (kg) | Pure Polyester Weight/200m (kg) | Weight Savings | % Reduction
44 | 188 | 240 | 52 | 21.7%
60 | 350 | 450 | 100 | 22.2%
80 | 622 | 800 | 178 | 22.3%
100 | 965 | 1,250 | 285 | 22.8%
120 | 1,396 | 1,800 | 404 | 22.4%
140 | 1,905 | 2,450 | 545 | 22.2%

Elongation Characteristics (typical)
Load Level | Elongation (typical) | Significance
10% MBL | <0.5% | Minimal deformation at light loads
25% MBL | <1.5% | Stable load distribution at typical working loads
50% MBL | <4% | Predictable behavior at maximum working loads
75% MBL | 8-12% | Controlled deformation before failure
At Breaking Load | 20-25% | Final elongation before rope failure

Flotation Characteristics
• Buoyancy: approximately 100–150 kg of buoyancy per 200m length (depending on diameter).
• Flotation ratio: rope floats with ~30–40% of its length above the water surface.
• Recovery advantage: flotation facilitates rope recovery in water-based operations and improves safety and visibility.

Complete Technical Specifications (selected standard sizes)
Diameter (mm) | Circumference (inches) | Weight/200m (kg) | Breaking Load (kN) | Breaking Load (tons) | Typical Applications
44 | 5-1/2 | 188 | 277 | 28.25 | Small vessels, auxiliary lines
48 | 6 | 222 | 328 | 33.45 | Small–medium vessels
52 | 6-1/2 | 264 | 382 | 38.96 | Small–medium vessels
56 | 7 | 304 | 440 | 44.88 | Medium vessels
60 | 7-1/2 | 350 | 502 | 51.2 | Medium vessels, general mooring
64 | 8 | 398 | 568 | 57.94 | Medium–large vessels
72 | 9 | 504 | 710 | 72.42 | Large vessels
80 | 10 | 622 | 867 | 88.43 | Large vessels, primary mooring
88 | 11 | 750 | 1,040 | 106.08 | Very large vessels
96 | 12 | 894 | 1,230 | 125.46 | Very large vessels
104 | 13 | 1,052 | 1,430 | 145.86 | Very large vessels, heavy-duty
112 | 14 | 1,210 | 1,660 | 169.32 | Mega-vessels
120 | 15 | 1,396 | 1,890 | 192.78 | Mega-vessels, extreme-duty
128 | 16 | 1,590 | 2,130 | 217.26 | Mega-vessels
136 | 17 | 1,790 | 2,390 | 243.78 | Ultra-heavy-duty applications
140 | 17-1/2 | 1,905 | 2,530 | 258.16 | Ultra-heavy-duty, specialized applications

Material Specifications & Standards
• Outer layer material: premium-grade polyester (PES).
• Inner core material: high-strength polyolefin (PP or PE).
• Polyester content: minimum 40% by weight. Polyolefin content: approx. 60% by weight.
• Fiber grade: high-tenacity fibers for both materials; braiding: double-fiber braided construction.
• Typical color: white or natural (custom colors available).
• Temperature range: -20°C to +60°C.
• Diameter tolerance: ±3% of nominal. Weight tolerance: ±5% per 200m.
• Standards and testing: ISO 1209, EN 1891, ISO 1419, ISO 5470, ASTM G154.

Notes
The hybrid double-fiber braided mooring rope is engineered to meet maritime operational demands by combining polyester protection with polyolefin performance. Select diameter and construction based on application-specific breaking load, buoyancy and handling requirements.