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.