What Is Closed Cell Foam Rubber

Closed cell foam is a strong flexible plastic rubber material that s made up of internal pores or cells.

What is closed cell foam rubber.

Due to the closely packed cells closed cell foam is vapor semi impermeable more rigid able to withstand greater pressure and is about 4 times denser than open cell foam. The foam is made up of cells that are closed off from one another to resist water penetration and provide thermal insulation. Closed cell foam is defined as a cell totally enclosed by its walls and hence not interconnecting with other cells. However closed cell foams are also in general more dense require more material and as a consequence are more expensive to produce.

Closed cell foam is usually made by subjecting a rubber compound to a gas such as nitrogen under high pressure. In closed cell foam the cells are like tiny air pockets piled together in a compact configuration resembling inflated balloons nestled tightly together. Closed cell foam is essentially incompressible once cured. Closed cell rubber typically when the cell structure is mentioned it is referring to a foam or sponge as opposed to a solid rubber.

This type of foam may also be made by incorporating gas forming materials into the compound. These internal cells of closed cell foam sit closely together but are not connected. Closed cell polyurethane foams have r values around 6 0 7 14 in. Foam rubber is a type of open cell foam.

What is closed cell foam used for. The closed cell foams normally have higher compressive strength due to their structures. Closed cell foam insulation is denser than open cell foam which breathes. Closed cell foam is made by applying a gas such as nitrogen to a rubber or plastic compound that is under high pressure.

Expanded rubber can be either open cell or closed cell it will depend on the specific product. Because of the large variety of closed cell foams available the applications are numerous. Water resistant closed cell foam rolls are long sheets of synthetic material that can be cut to length for wrapping packaging and insulating applications. It is the more common of the two types of polyurethane spray foams.

In the trades it is known as medium density or two pound foam. Closed cell foam is defined as a cell totally enclosed by its walls and hence not interconnecting with other cells. Closed cell foams do not have interconnected pores. Closed cell foam is usually made by subjecting a rubber compound to a gas such as nitrogen under high pressure.