Polyester rope Vormann Ø 6 mm

Polyester ropes or Polyester shutter cords or PES shutter cords are widely used for boat lines and for sail material because it combines good strength and durability, relatively low stretch and reasonable prices.

Polyester Physical Properties

• Polyester has a specific gravity of 1.38 which means it does NOT float.
• Polyester is very strong, it has a similar tensile strength to Nylon 6, and is slightly stronger than regular Nylon.
• Unlike Nylon or Polypropylene, Polyester is not stretchy. Usually any stretch present in Polyester is minimized by pre-stretching during the manufacturing process. It also has low creep under load.
• Unlike Nylon, Polyester retains its strength when wet.
• Melting Point 240 degree Celcius. Varies with different composition
• UV resistance is Excellent. Typically a polyester rope will only lose 10% of its breaking strength after 2 years of outdoor use. This is excluding cuts or severe abrasion. Polyester is often chosen as the outside coating for a cored rope made from a stronger but uv sensitive materials such as kevlar.
• Excellent abrasion resistance.
• Polyester is non conductive to electricity.

Advantages

• Good chemical resistance at regular temperatures
• Excellent UV resistance
• Polyester is slightly stronger than Nylon. Unlike nylon it does not lose strength when wet.
• Low Stretch
• Stiffer than Nylon
• Well suited to Static Loads
• Well priced and widely available.

Disadvantages

• Polyester does not float.
• Some braids of polyester are quite stiff and don't work very well in blocks.
• Polyester is not suitable if the load is subject to jerking. It does not give as nylon does. In these applications it might only be used as the outside protective layer.

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