Product Specification

Twisted PE Rope 100% Virgin Material PE Twisted 3 Strands Rope

1.PHOTOS

2. Main performance

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

1. Production Process of 100% Virgin Material 3-Strands Twisted PE Rope

Step 1: Raw Material Preparation (Virgin PE Pellet Processing)

• Material Selection: Only 100% virgin PE pellets are used (no recycled content) to guarantee uniform quality. Virgin PE pellets are chosen based on grade (e.g., high-density polyethylene, HDPE, for enhanced strength, or low-density polyethylene, LDPE, for flexibility) depending on the rope’s intended use.
• Drying and Pre-Treatment: Virgin PE pellets may undergo a low-temperature drying process to remove any residual moisture (though PE is naturally hydrophobic, this step prevents potential bubbles in the final product). The pellets are then fed into a hopper for continuous supply to the next stage.

Step 2: Extrusion (PE Monofilament Production)

• Melting and Extrusion: The dried virgin PE pellets are heated in an extruder to a molten state (typically 160–220°C, depending on PE grade). The molten PE is forced through a spinneret—a metal plate with hundreds of tiny, uniform holes—by high pressure.
• Cooling and Solidification: As the molten PE strands (known as "filaments") exit the spinneret, they are immediately cooled in a water bath or air-cooling system. This rapid cooling solidifies the filaments into flexible, continuous PE monofilaments while maintaining their structural integrity.
• Drawing (Strengthening): The solidified monofilaments are pulled through a series of tension rollers (drawing process) to stretch the material. This step aligns the PE molecular chains, significantly improving the monofilament’s tensile strength and reducing its diameter to the required specification.

Step 3: Yarn Plying (Forming Primary Strands)

• Monofilament Bundling: Multiple PE monofilaments (the number varies by rope thickness) are gathered into a single bundle. This bundle is then twisted together (known as "plying") using a twisting machine to form a cohesive, cylindrical "primary strand."
• Tension Control: Strict tension is maintained during plying to ensure the monofilaments are evenly distributed within the strand. This prevents weak points and ensures consistent strength across the strand. For 3-strands twisted rope, three identical primary strands are produced in this step.

Step 4: Final Twisting (3-Strands Rope Formation)

• Strand Alignment: The three pre-manufactured primary strands are mounted on a twisting frame, with each strand positioned at a 120° angle relative to the others (to ensure balanced twisting).
• Counter-Twisting: The three strands are twisted together in a direction opposite to their initial plying direction (e.g., if strands were plied clockwise, the final twist is counterclockwise). This "counter-twisting" creates friction between the strands, locking them into place and forming a stable, 3-strands twisted PE rope.
• Diameter and Twist Rate Calibration: The twisting speed and tension are adjusted to achieve the target rope diameter (e.g., 4mm, 12mm, 24mm) and twist rate (twists per meter). A higher twist rate increases rope rigidity, while a lower rate enhances flexibility.

Step 5: Post-Processing and Quality Inspection

• Trimming and Cutting: The continuous twisted rope is cut into standard lengths (e.g., 50m, 100m, 200m) using automated cutting machines. Loose filament ends are trimmed to ensure a clean finish.
• Surface Treatment (Optional): For specialized applications, the rope may undergo surface treatments such as UV stabilization (to resist sun damage), anti-abrasion coating (to reduce wear), or water repellency enhancement (though virgin PE is already water-resistant).
• Quality Testing: Each batch of rope undergoes rigorous testing, including:
  • Tensile strength test: Measuring the maximum load the rope can withstand before breaking.
  • Elongation test: Checking the rope’s stretch under load (virgin PE rope typically has low elongation, 10–20% at break).
  • Visual inspection: Ensuring no cracks, uneven twisting, or filament breakage.
  • Chemical resistance test: Verifying resistance to oils, acids, and alkalis (key for industrial use).

Step 6: Packaging

• The inspected rope is wound onto spools, reels, or coils (depending on customer requirements). It is then packaged in plastic wrap or woven bags to protect it from dust, moisture, and physical damage during storage and transportation. Each package is labeled with details such as material (100% virgin PE), strand count (3-strands), diameter, length, and batch number.

2. Application Scope of 3-Strands Twisted 100% Virgin PE Rope

2.1 Marine and Aquatic Applications

• Mooring and Docking: Securing boats, yachts, and ships to docks or buoys. The 3-strands structure provides excellent grip for knots (e.g., cleat hitch, bowline) and maintains strength in wet conditions.
• Fishing Gear: Used as fishing lines (for small to medium fish), netting ropes (for fishing nets), or anchor lines (for small boats). Its low water absorption ensures it does not become heavy when wet, reducing load on fishing equipment.
• Water Sports: Tow ropes for water skiing, wakeboarding, or tubing. The rope’s flexibility and high tensile strength (up to 5,000N for 12mm diameter) withstand sudden pulls from water sports activities.

2.2 Agriculture and Horticulture

• Crop Support: Supporting climbing crops such as tomatoes, beans, and grapes. The rope’s smooth surface prevents damage to plant stems, while its UV resistance ensures it lasts through multiple growing seasons.
• Livestock Fencing: Forming temporary or semi-permanent fences for cattle, sheep, or poultry. The 3-strands structure resists tearing from animal impacts, and its non-toxic nature (virgin PE has no harmful additives) is safe for livestock.
• Irrigation System Installation: Securing irrigation pipes, sprinklers, or drip lines in fields. The rope’s water resistance prevents rot, even when in prolonged contact with moisture.

2.3 Industrial and Construction Applications

• Light Load Lifting: Lifting or pulling small equipment (e.g., tools, parts) in factories or construction sites (note: not for heavy lifting of machinery or personnel—reserved for ropes with higher strength ratings like steel wire ropes).
• Cargo Securement: Securing packages, boxes, or lightweight cargo on trucks, trailers, or shipping containers. The rope’s grip and low stretch prevent cargo from shifting during transit.
• Construction Site Marking: Marking hazardous areas (e.g., holes, trenches), guiding workers, or securing temporary barriers. Its bright color options (e.g., yellow, orange) enhance visibility.

2.4 Recreational and Household Uses

• Outdoor Activities: Camping (securing tents, hanging food bags to avoid wildlife), hiking (marking trails), or backyard games (tug-of-war, swing ropes for children’s playsets).
• Household Tasks: Organizing garages (tying tools, bundling pipes), gardening (training plants, tying branches), or packing (securing boxes for moving).
• Crafts and DIY Projects: Making pet toys (chew ropes for dogs), decorative items (macramé plant hangers, wall art), or DIY furniture (weaving chair seats). The rope’s flexibility allows for easy shaping.

2.5 Environmental and Sanitation Applications

• Waste Management: Securing garbage bags, tying waste bins, or lifting lightweight waste containers in landfills. Its non-porous surface prevents odor absorption.
• Water Treatment: Securing floating filters, aeration devices, or sampling equipment in water treatment plants. It resists damage from chlorine, algae, and other water treatment chemicals.
• Aquaculture: Used in fish farms to secure floating nets, cages, or feeding systems. It withstands long-term immersion in freshwater or saltwater without rotting.