
2. Main performance
Material | Polyamide Multifilament | Polyamide Yarn | Polypropylene Multifilament | Polypropylene | Polyester | Polypropylene and Polyester Mixed |
Spec.Density | 1.14 no floating | 1.14 not floating | 0.91 no floating | 0.91 Floating | 1.27 no floating | 0.95 Floating |
Melting Point | 215℃ | 215℃ | 165℃ | 165℃ | 260℃ | 165℃/260℃ |
Abrasion Resistance | Very Good | Very Good | Medium | Medium | Good | Good |
U.V.Resistance | Very Good | Very Good | Medium | Medium | Good | Good |
Temperature resistance | 120℃max | 120℃max | 70℃max | 70℃max | 120℃max | 80℃max |
Chemical resistance | Very Good | Very Good | Good | Good | Good | Good |
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
Specification 规格 | PA Multifilament 锦纶复丝 | PAYarn 锦纶 | PP Multifilament 丙纶长丝 | Polypropylene 丙纶 | Polyester 涤纶 | PET/PP Mixed 丙纶/涤纶混合绳 |
Dia. | Cir | Ktex | KN | Ktex | KN | Ktex | KN | Ktex | KN | Ktex | KN | Ktex | KN |
直径 | 圆 周 | 线密度 | 破断强力 | 线密度 | 破断强力 | 线密度 | 破断强力 | 线密度 | 破断强力 | 线密度 | 破断强力 | 线密度 | 破断强力 |
4 | 1/2 | 10 | 3.7 | 10 | 2.6 | 6.3 | 2.3 | 6 | 2.1 | 12 | 2.9 | 7.0 | 2.8 |
6 | 3/4 | 22 | 7.9 | 22 | 6 | 18 | 6.5 | 17 | 5.9 | 27 | 5.6 | 17.5 | 6.8 |
8 | 1 | 40 | 13.8 | 40 | 10.9 | 32 | 11.4 | 30 | 10.4 | 48 | 10.0 | 31 | 11.9 |
10 | 1-1/4 | 62 | 21.2 | 62 | 15.7 | 47 | 16.8 | 45 | 15.3 | 76 | 15.6 | 48.5 | 18.2 |
12 | 1-1/2 | 89 | 30.1 | 89 | 24.1 | 68 | 23.9 | 65 | 21.7 | 110 | 22.3 | 69.9 | 25.7 |
14 | 1-3/4 | 121 | 40.0 | 121 | 33.0 | 95 | 32.9 | 90 | 29.9 | 148 | 31.2 | 95.1 | 34.7 |
16 | 2 | 158 | 51.9 | 158 | 42.5 | 121 | 40.7 | 115 | 37.0 | 195 | 39.8 | 124 | 44.8 |
18 | 2-1/4 | 200 | 64.3 | 200 | 53.9 | 155 | 51.9 | 148 | 47.2 | 245 | 49.8 | 157 | 56.1 |
20 | 2-1/2 | 247 | 79.2 | 247 | 66.7 | 189 | 62.6 | 180 | 56.9 | 303 | 62.3 | 194 | 68.7 |
22 | 2-3/4 | 299 | 94.0 | 299 | 80.4 | 231 | 75.0 | 220 | 68.2 | 367 | 74.7 | 235 | 82.1 |
24 | 3 | 355 | 112 | 355 | 93.6 | 273 | 87.7 | 260 | 79.7 | 437 | 89.6 | 279 | 96.3 |
26 | 3-1/4 | 417 | 129 | 417 | 111.5 | 320 | 101 | 305 | 92.2 | 512 | 105 | 328 | 113 |
28 | 3-1/2 | 484 | 149 | 484 | 127 | 373 | 115 | 355 | 105 | 594 | 120 | 380 | 130 |
30 | 3-3/4 | 555 | 169 | 555 | 143 | 425 | 132 | 405 | 120 | 682 | 134 | 437 | 148 |
32 | 4 | 632 | 192 | 632 | 161 | 483 | 146 | 460 | 132 | 778 | 154 | 497 | 167 |
36 | 4 - 1/ 2 | 800 | 240 | 800 | 200 | 614 | 182 | 585 | 166 | 982 | 190 | 629 | 210 |
40 | 5 | 987 | 294 | 987 | 241 | 756 | 221 | 720 | 201 | 1215 | 235 | 776 | 257 |
44 | 5-1/2 | 1190 | 351 | 1190 | 289 | 924 | 266 | 880 | 242 | 1468 | 275 | 939 | 308 |
48 | 6 | 1420 | 412 | 1420 | 338 | 1092 | 308 | 1040 | 280 | 1750 | 329 | 1110 | 364 |
52 | 6-1/2 | 1670 | 479 | 1670 | 393 | 1281 | 357 | 1220 | 325 | 2050 | 384 | 1320 | 424 |
56 | 7 | 1930 | 550 | 1930 | 450 | 1491 | 408 | 1420 | 371 | 2380 | 439 | 1520 | 489 |
- Raw Material Preparation: Select high-quality polyethylene (PE) pellets and nylon chips that meet marine-grade standards. Dry the raw materials to remove excess moisture—this step prevents bubble formation or structural weaknesses in the final rope. The PE provides durability and water resistance, while nylon enhances tensile strength and elasticity, ensuring the blend suits anchor and mooring needs.
- Fiber Extrusion & Drawing: Feed the dried PE pellets and nylon chips into separate extruders. Heat the materials to their melting points, then extrude them through spinnerets to form continuous, thin filaments. Stretch these filaments (a process called “drawing”) to align the polymer molecules—this strengthens the fibers and improves their resistance to wear and stretching, critical for withstanding marine loads.
- Strand Formation (Spinning & Twisting): Gather a fixed number of drawn PE and nylon filaments (proportionally blended to balance strength and flexibility) into yarns. Twist multiple yarns together to form three individual strands. The twisting tension is carefully controlled to ensure each strand has uniform thickness and density—consistency here prevents uneven load distribution in the final rope.
- Rope Twisting (Closing): Feed the three prepared strands into a rope-twisting machine. Twist the strands together in a controlled, helical pattern to form the 6mm-diameter rope. The twisting direction and tightness are calibrated to enhance the rope’s structural stability—too loose, and the rope may unravel; too tight, and it may lose flexibility. During this step, the rope’s diameter is monitored to maintain the precise 6mm specification.
- Post-Treatment & Quality Inspection: Pass the twisted rope through a cooling chamber to set the twist and stabilize the structure. Optionally, apply a UV-resistant coating (to boost durability in sunlight) or a friction-reducing finish (to minimize abrasion during mooring). Conduct quality checks: test tensile strength, measure diameter uniformity, inspect for strand fraying, and verify water resistance. Finally, wind the 合格 (qualified) rope onto spools or reels for packaging and storage.
- Balanced Strength & Flexibility: The PE-nylon blend, paired with 3-strand twisted construction, delivers reliable tensile strength for 6mm-diameter applications—enough to secure small boats during mooring or light anchoring. Nylon adds moderate elasticity to absorb shock (e.g., wave-induced tugs), while PE maintains structural rigidity, ensuring the rope does not overstretch or lose shape under load. This balance makes it easy to handle (flexible enough to tie knots) yet strong enough for marine tasks.
- Superior Water & Saltwater Resistance: Both PE and nylon are inherently hydrophobic. The 3-strand twisted design minimizes water absorption by reducing gaps between strands, so the rope does not gain weight, rot, or degrade when submerged in freshwater or saltwater. Unlike water-absorbent ropes, it retains full strength and flexibility even after prolonged exposure to marine environments, avoiding performance loss during long mooring periods.
- Excellent Abrasion Resistance: PE’s tough, plastic-like surface and nylon’s durable fibers create a rope that withstands friction against rough surfaces—such as boat hulls, metal cleats, dock edges, or rocky seabeds. The 3-strand twist compacts the fibers tightly, forming a dense outer layer that resists fraying, scuffing, or strand breakage. This durability extends the rope’s service life, even with frequent contact with harsh marine hardware.
- UV Stability & Weather Durability: The PE-nylon blend is formulated to resist ultraviolet (UV) radiation—critical for ropes exposed to sunlight during mooring. The material prevents brittleness, discoloration, or strength loss caused by prolonged sun exposure. Additionally, it tolerates temperature fluctuations (from hot coastal days to cool nights) without cracking or becoming rigid, maintaining performance in diverse weather conditions.
- Lightweight & Easy to Maintain: At 6mm diameter, the rope is lightweight, making it simple to transport, deploy, and retrieve—ideal for small boat owners or casual mariners. It coils neatly for storage and does not require complex maintenance: after use, rinsing with fresh water (to remove salt or debris) is sufficient to keep it in good condition. Unlike heavy ropes, it does not strain hands or equipment during handling.3. Application Scope
- Application Scope
- Small Boat Mooring: Designed for mooring small watercraft, including dinghies, kayaks, canoes, jet skis, and small recreational boats (under 20 feet). Its 6mm diameter and balanced strength secure these vessels to docks, buoys, or shorelines, even in mild winds or gentle tides. The flexibility allows easy tying to cleats or pilings, while water resistance ensures reliability in daily use.
- Light Anchoring for Small Vessels: Suitable for light anchoring tasks—such as temporary stops for fishing, swimming, or shore access—in calm waters (lakes, bays, or sheltered coastal areas). It provides enough strength to hold small boats in place without dragging, and the shock absorption (from nylon) prevents the anchor from dislodging during minor wave movement.
- Dinghy & Tender Towing: Used to tow dinghies or tenders behind larger boats (e.g., yachts or sailboats) in calm waters. Its lightweight design reduces drag during towing, while the PE-nylon blend withstands the tension of pulling small craft. The abrasion resistance protects against wear from contact with the larger boat’s hull or towing hardware.
- Marine Accessory Securement: Ideal for securing small on-board accessories, such as fenders, life rings, fishing gear, or inflatable toys, to small boats. Its 6mm diameter is thin enough to avoid bulk yet strong enough to keep items in place during voyages. The water resistance ensures the rope does not degrade when exposed to splashes or rain.
- Recreational Water Activity Markers: Used to set up temporary markers for recreational activities, such as swimming area boundaries, fishing spot markers, or buoy lines for water games (e.g., water polo or paddleboarding). Its visibility (often available in bright colors) and durability make it easy to spot, while UV resistance ensures it lasts through seasonal use.