초록 ▼

The invention relates to a flotation element for vessels, consisting of concrete comprising closed-cell expanded foam beads, such as polypropylene beads, which are coated with a flexible binder, such as polyurethane, whereby the unfilled inter-bead volumes do not exceed approximately 20% of the volu

The invention relates to a flotation element for vessels, consisting of concrete comprising closed-cell expanded foam beads, such as polypropylene beads, which are coated with a flexible binder, such as polyurethane, whereby the unfilled inter-bead volumes do not exceed approximately 20% of the volume of the floatation element. Preferably, one such floatation element comprises a concrete core as indicated above, a polyurethane coating around the core and a bonding film, such as polyurethane, which is disposed between the core and the coating. The invention is suitable for the construction of vessel floats.

대표청구항 ▼

The invention claimed is: 1. A buoyancy block for a vessel, comprising a concrete made of expanded foam balls with closed cells coated in a flexible binding, said concrete comprising unfilled volumes between the balls, said unfilled volumes not exceeding approximately 20% of the volume of the buoyan

The invention claimed is: 1. A buoyancy block for a vessel, comprising a concrete made of expanded foam balls with closed cells coated in a flexible binding, said concrete comprising unfilled volumes between the balls, said unfilled volumes not exceeding approximately 20% of the volume of the buoyancy block, wherein said expanded foam balls with closed cells are expanded polypropylene balls, wherein said flexible binding is a polyurethane binding,said concrete forming a core, said buoyancy block comprisingat least one polyurethane coating skin coating the core, anda coupling film interposed between the core and the coating skin.