Polyurethane foam-filled boat fenders offer excellent energy absorption, long service life, and reliable performance thanks to their strong polyurethane shell and high-resilience polyurethane foam core. These fenders are widely used in commercial ports, ship-to-ship operations, offshore structures, and naval facilities.
Structure of polyurethane foam-filled fenders
The polyurethane foam-filled fender features a two-layer construction designed to withstand harsh marine conditions and continuous impact:
• Inner core: Energy-absorbing polyurethane foam
At the heart of the fender is a high-density closed-cell polyurethane foam core. This foam core is designed to:
Absorb kinetic energy during vessel contact,
Maintain its shape after repeated compression,
Resist water ingress, even if the outer layer is punctured.
The foam’s resilience ensures long-term performance and a reliable cushioning effect during docking or mooring.
• Outer layer: Tough polyurethane elastomer skin
Encasing the foam core is a thick polyurethane elastomer coating that serves as the fender’s primary protective layer. This outer skin offers:
High abrasion and impact resistance,
UV and weather resistance for long-term outdoor use,
Excellent durability in saltwater environments,
Smooth surface to minimize damage to vessel hulls.
Steel end fittings or embedded flanges are typically included at both ends to facilitate easy handling and installation.
Functions of foam-filled polyurethane fenders
Energy absorption: The foam core effectively absorbs and disperses kinetic energy during impact, protecting both the vessel and the dock.
Self-floating design: These fenders float on water and can adjust with tide levels, maintaining effective protection at all times.
Puncture resilience: Unlike air-filled fenders, foam-filled types do not deflate when damaged, ensuring continued operation.
Maintenance-free operation: The closed-cell foam and sealed outer skin reduce the need for frequent inspection or repair.
Usage scenarios
Polyurethane foam-filled boat fenders are ideal for a variety of marine applications, including:
• Ship-to-ship transfers (STS operations): Especially useful for tankers, bulk carriers, and LNG vessels requiring reliable and safe fendering between hulls.
• Ship-to-dock berthing: Used in ports, terminals, and docks to protect both vessel hulls and concrete structures.
• Offshore platforms and floating terminals: Their floating capability makes them perfect for dynamic water level environments.
• Military and coast guard vessels: For rapid docking and high-durability needs in tactical or patrol applications.
• Workboats, tugboats, and ferries: Daily docking operations in harsh conditions benefit from the rugged, no-maintenance design.
Polyurethane foam-filled boat fenders provide an advanced, durable, and effective solution for vessel protection. With a rugged polyurethane shell and a high-resilience foam core, they deliver excellent energy absorption, long service life, and reliable performance in the most demanding marine environments. Whether for port infrastructure or offshore operations, these fenders ensure safety and efficiency at every point of contact.
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