1.PHOTOS

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 |
High-tenacity polyester filaments are selected as the raw material, as they provide the rope’s core high breaking load and resistance to marine environmental factors (e.g., saltwater, UV rays). The filaments are first inspected for uniformity in diameter and tensile strength to ensure consistency. They are then unwound from spools and grouped into fiber bundles, with the number of bundles determined by the desired rope diameter and breaking load—more bundles are used for thicker, higher-load ropes.
The grouped polyester fiber bundles are fed into a stranding machine to form the inner core of the double braid. The machine twists the bundles in a consistent direction (e.g., right-hand twist) to create multiple core strands. These core strands are then braided together using a circular braiding machine, which interlaces the strands in a tight, uniform pattern. This inner braid serves as the primary load-bearing component, so the braiding tension is carefully controlled to maximize structural integrity and ensure the core can withstand high breaking loads.
Separate polyester filaments are processed into yarns for the outer braid. These yarns may undergo additional treatment (e.g., coating with a water-repellent or UV-resistant agent) to enhance the rope’s durability in marine settings. The yarns are then wound onto bobbins, which are loaded into a larger braiding machine—separate from the one used for the inner core—to prepare for the outer braiding process.
The pre-formed inner core is fed through the center of the outer braiding machine. The machine interlaces the outer braid yarns around the inner core in a counter-direction to the core’s braid (e.g., left-hand twist if the core is right-hand twisted). This opposing braid direction creates a tight, cohesive double braided structure that locks the inner core in place, preventing slippage between the core and outer layer. The braiding speed and tension are adjusted to ensure the outer braid is evenly distributed and has no gaps, which is critical for maintaining the rope’s high breaking load and abrasion resistance.
After braiding, the rope undergoes several finishing steps:
- Heat Setting: The rope is passed through a heat chamber to stabilize the braided structure, reducing residual tension and preventing shrinkage during future use in marine environments.
- Trimming and Deburring: Any loose yarns or frayed edges are trimmed to create a smooth, uniform surface, which minimizes friction and abrasion when the rope is used with sailing hardware (e.g., winches, cleats).
- Quality Testing: Samples of the finished rope are tested for breaking load (using a tensile testing machine), abrasion resistance, and water absorption to ensure they meet marine sailing standards. Ropes that pass testing are wound onto large spools or cut into custom lengths for packaging.
- Mainsheet and Jib Sheet Ropes: Used as mainsheet (controls the mainsail) and jib sheet (controls the jib sail) ropes for sailboats, from small recreational dinghies to mid-sized cruising yachts. The high breaking load withstands the tension generated by strong winds, while the double braided structure ensures smooth handling on winches—critical for adjusting sail position quickly and safely.
- Halyard Ropes: Serves as halyards (ropes used to raise/lower sails, such as the mainsail halyard or genoa halyard). The polyester material resists stretching under the weight of sails, maintaining consistent sail height, and the double braid’s durability stands up to repeated friction with mast hardware.
- Dock Lines and Mooring Lines: Suitable for dock lines (securing boats to docks during short stops) and mooring lines (long-term anchoring to buoys or piers). The high breaking load handles wind and tide forces, while polyester’s resistance to saltwater and UV rays prevents degradation, ensuring long-term reliability in coastal or offshore mooring.
- Regatta and Racing Sailboats: Used in competitive sailing events (e.g., regattas) where performance and strength are critical. The rope’s low stretch (a property of polyester) ensures precise sail control, which can impact race outcomes, and its high breaking load provides safety during high-speed maneuvers in strong winds.
- Recreational Watercraft: Applied to small recreational sailboats (e.g., day sailers) for tasks like securing auxiliary sails, tying down on-deck gear, or creating temporary lines for swimming platforms. Its durability and marine resistance make it suitable for frequent use in lakes, bays, or coastal waters.
- Small Commercial Vessels: Used on small commercial boats (e.g., fishing boats, tour boats) for tasks like securing fishing nets, tying off equipment, or as backup lines for mooring. The high breaking load supports the weight of heavy gear, while the double braid’s abrasion resistance withstands contact with fishing hardware or boat hulls.
- Marine Maintenance and Repair: Employed during marine maintenance (e.g., hauling small parts, securing boats during repairs) or as temporary lines for floating structures (e.g., small docks, work platforms). Its strength and durability ensure safety during maintenance tasks, even in wet or salty conditions.