Guide de conception et de personnalisation des défenses remplies de mousse

1. Introduction

Foam filled fenders are key in docking ships, offshore platforms, and ports. NANHAI makes them to be light, durable, and energy‑absorbing. These foam fenders avoid air leaks and stay buoyant under stress.

2. Foam Filled Fenders Density: 30–140 kg/m³

2.1 Density Ranges

• 30 kg/m³ (Very soft): Best for small boats. It lowers reaction force but absorbs less energy.
• 50–70 kg/m³ (Soft to medium): Balanced for most uses.
• 100–140 kg/m³ (Hard to extra-hard): For big ships and heavy impacts. It boosts energy absorption but increases pushback force.

2.2 Energy Absorption vs Reaction Force

Dense foam absorbs more energy but also pushes back harder. Designers should pick density based on the ship and dock strength needed.

3. Foam Filled Fenders Size & Shape Effects

Foam filled fenders come in many sizes. Common diameter ranges are 700 mm to 4500 mm, and lengths from 800 mm to 15,000 mm. Larger sizes give more cushion and space off the dock, but cost more to make and install.

4. Outer Skin Material & Reinforcement

NANHAÏ uses EVA foam core covered by a polyurea-coated shell made of plastic, nylon, and rubber. This skin offers protection against abrasion, oil, salt water, UV rays, acid, and alkali.
Some fenders use chain or tire nets over the foam to add strength and resist wear.

5. Custom Design Considerations

Engineers work with mooring energy, angles, tide height, and ship size to choose the right fender size, density, shape, and fittings. They follow standards like PIANC and naval specs.

6. Testing & Performance Checking

Manufacturers test foam energy absorption by compressing it 60 %. They also check the skin’s durability in UV, salt, chemicals, and heat.

7. Installation & Maintenance

NANHAI foam‑filled fenders float and can hang by chains. They never lose air, so they need almost no upkeep.
To keep them working well, check skin for cracks, clean off dirt, and tighten mounting parts as needed.

8. Case Use

• Small crafts: Use soft foam and small size to avoid docking damage.
• Medium ports: Use medium density and size for balanced protection.
• Large commercial/naval docks: Use hard foam, large size, and reinforcement nets for heavy-duty use. NANHAI customizes every fender to client’s needs and holds patents plus military specs.

Why Choose NANHAI Foam Filled Fenders?

• Proven 20‑year track record in marine fenders and foam buoys.
• Density range 30–140 kg/m³ to match any need.
• High energy absorption with low reaction force keeps ships and docks safe.
• Durable EVA foam + polyurea skin lasts 10–15 years.
• Custom sizes, colors, and shapes let you match your dock and needs.

Conclusion

NANHAI’s foam filled fenders protect vessels and docks by absorbing energy and staying durable. You can choose density, size, skin, and design to fit your needs. Contact NANHAI for a quote or custom design suited to your marine project.