closedcelled

Closedcelled is a term used to describe a type of foam structure. In closed-celled foam, the individual cells are completely enclosed and do not connect to neighboring cells. This creates a dense, impermeable barrier. This structure is typically achieved during the manufacturing process, where a blowing agent expands a polymer matrix, trapping gas within discrete pockets.

The properties of closed-celled foam are directly related to its structure. Because the cells are sealed, it exhibits excellent resistance to water and gas penetration. This makes it a good choice for applications where buoyancy, insulation, or a moisture barrier is required. For example, closed-celled foam is commonly used in flotation devices, insulation panels for buildings and refrigerators, and as a sealant. Its rigid nature can also contribute to structural integrity.

In contrast to open-celled foam, where cells are interconnected and allow for the passage of air and liquids, closed-celled foam offers a different set of performance characteristics. The manufacturing process and material composition of the polymer will dictate the specific density and mechanical properties of the resulting closed-celled foam.