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-quality polypropylene resin pellets (selected for marine and industrial durability) are the primary raw material. The pellets are first fed into a hopper and then conveyed to an extruder. Inside the extruder, the pellets are heated to a molten state (typically between 180°C–220°C) under controlled temperature to ensure uniform melting without thermal degradation. This molten polypropylene is then pushed through a spinneret—a metal plate with hundreds of tiny holes—to form continuous, thin filaments.
The extruded filaments are immediately cooled with cold air or a water bath to solidify them into flexible, solid strands. After cooling, the filaments undergo a stretching process (draw ratio of 3:1 to 5:1) using tension rollers. This stretching aligns the polypropylene molecules, enhancing the filaments’ tensile strength and reducing elongation. For multifilament structure, multiple stretched filaments are then lightly textured (via air-jet or mechanical crimping) to improve cohesion between strands and enhance the rope’s flexibility.
The textured polypropylene multifilaments are gathered and twisted into thicker, uniform yarns. These yarns are then plied together (usually 3–4 yarns per ply) to form the 8 individual strands required for the rope. Each strand is twisted consistently to ensure even thickness and strength—critical for maintaining load balance in the final rope.
The 8 pre-formed strands are fed into a specialized braiding machine (with 8 bobbins arranged in a circular pattern). The machine interlaces the strands in a precise, repetitive pattern to create the 8-strand braided structure. The braiding tension is closely monitored to ensure the strands are woven tightly and uniformly, preventing gaps that could reduce durability or allow moisture retention. This step forms the core structure of the rope.
After braiding, the rope undergoes post-treatment to enhance performance:
- Heat Setting: The rope is heated briefly and then cooled to stabilize its structure, reducing shrinkage during future use (especially important for marine and lifting applications).
- Surface Smoothing: A light calendaring or coating process may be applied to minimize friction and improve abrasion resistance (optional, based on end-use needs).
Finally, the rope is cut into standard lengths (e.g., 50m, 100m) and subjected to quality checks: tensile strength testing, elongation measurement, abrasion resistance assessment, and visual inspection for strand defects or uneven braiding. Only ropes meeting industrial standards proceed to packaging.
- Vessel Anchoring: Suitable for anchor lines of small to medium-sized vessels (e.g., fishing boats, recreational yachts, workboats). Its polypropylene material is lightweight (floats in water, easy to retrieve) and resistant to saltwater corrosion, while the 8-strand structure provides sufficient strength to hold vessels against tides and winds.
- Mooring Lines: Used to secure vessels to docks, piers, or buoys. The rope’s flexibility allows easy tying of secure knots (e.g., cleat hitch), and its abrasion resistance withstands friction from dock edges or boat hulls—ensuring long-term reliability in coastal or harbor environments.
- Vessel Towing: Ideal for light to medium-duty towing of small watercraft (e.g., dinghies, jet skis) behind larger vessels. Its tensile strength handles towing loads, and polypropylene’s low water absorption prevents weight gain that could hinder towing efficiency.
- Light-Duty Lifting Slings: Used as lifting slings for lightweight loads (e.g., small machinery parts, packaging materials, construction tools) in factories, warehouses, or construction sites. The 8-strand braided structure distributes load evenly, and polypropylene’s non-conductive property adds safety when working near low-voltage equipment. It is a cost-effective alternative to heavy metal slings for non-abrasive, low-load tasks.
- Heavy-Duty Packaging Rope: Widely used in logistics for securing palletized goods, bundling large packages (e.g., furniture, industrial components), or reinforcing cardboard boxes during shipping. Its high tensile strength prevents load shifting, and polypropylene’s resistance to moisture and mildew protects goods from damage in humid storage or transit conditions. It is also easy to cut and tie, improving packaging efficiency.
- Water Sports & Camping: Used in water sports (e.g., marking swimming areas, securing inflatable rafts) due to its buoyancy and water resistance. In camping, it serves as tent guy lines, gear-hanging ropes, or temporary clotheslines—its lightweight nature and durability making it easy to carry and reliable in outdoor weather.
- Farm Gear Securement: Used in agriculture for tying down hay bales, securing lightweight farm equipment (e.g., irrigation hoses, small tool racks), or creating temporary fences for small livestock. Its resistance to UV radiation and outdoor elements ensures longevity in open farm environments, and its flexibility allows adjustment to different farm structures.
