In closed-cell foam, the individual cells are sealed off from one another, creating a structure with closed pores. These closed pores prevent the passage of air, moisture, and liquids through the foam.
In open-cell foam, the individual cells are interconnected, creating a structure with open pores. These open pores allow air, moisture, and liquids to pass through the foam.
Closed-cell foam tends to have a higher density and rigidity compared to open-cell foam due to its tightly sealed cell structure. This density and rigidity provide closed-cell foam with greater strength, durability, and resistance to compression.
Open-cell foam tends to have a lower density and softer texture compared to closed-cell foam. Its interconnected cell structure gives open-cell foam a more flexible and compressible nature, making it suitable for cushioning and comfort applications.
Because of its closed pores, closed-cell foam is resistant to moisture absorption. It does not allow water or liquids to penetrate through the foam, making it suitable for applications requiring water resistance or buoyancy.
Open-cell foam can absorb and retain moisture due to its open pores. While this property can be advantageous in applications such as sound absorption and filtration, it may also make open-cell foam susceptible to mold, mildew, and degradation in humid or wet environments.
Closed-cell foam provides better thermal insulation and sound insulation compared to open-cell foam. Its closed pore structure traps air and reduces heat transfer, making closed-cell foam suitable for applications requiring insulation, such as HVAC ducts, refrigeration units, and building insulation.
Open-cell foam provides less effective thermal and sound insulation compared to closed-cell foam due to its interconnected cell structure. While open-cell foam can still provide some insulation properties, it may be less efficient in blocking heat transfer and sound transmission.
