Closed Cell foam is better than Open Cell foam

Foam is consisting of numerous small sealed cavities usually filled with air. In closed cell foam, the gas forms discrete pockets in which each one is completely surrounded by the solid material. Closed cell foam do not have higher compressive strength due to their structures.

However, foam manufacturer produced also denser which requires more material and as a consequence are more expensive. The closed cells can be filled with a specialized gas to provide improved insulation. The closed cell foams have higher dimensional stability, low moisture absorption coefficients and higher strength compared to open cell foams. All types of foams are widely used as core material in sandwich structured composite materials by manufacturers.

Closed Cell Foam Properties:

• Excellent impact absorbing properties
• Durable Safe and non-toxic
• UV resistant
• Shatterproof
• Non?dusting
• Excellent buoyancy
• Excellent shock absorption
• Lightweight
• Thermal insulation properties
• Range vary from soft and flexible to hard and resilient
• Safe from mold, rot, and bacteria
• Superior chemical and grease resistance
• Non-corrosive
• Moisture and Chemical Resistant
• Low water absorption values
• Strength, Wear and tear resistant

Today every Closed Cell Foam Manufacturer obtaining the technique which have a tolerance and as such when parts are assembled there are gaps, which become parts of the final product. Since closed cell foam is impervious to gases and liquids, it is an ideal medium to use to plug these gaps.

As cells in closed cell foam are independent from other cells in that they have their own cell structure. The resulting foam has a much higher plastic content and less air/gas content. These types of foams are very strong and lightweight, low in moisture absorption, flexible, resists most solvents. It is very durable which can withstand a large amount of pressure without major distortion. It can be used to prevent water or air from passing from one area to another and so they are an ideal medium for plugging the gaps.The gases within bubbles can’t escape, and so if a heavy weight is dropped on a closed cell foam, the gases are compressed initially, but want to recover, which makes a closed cell foam ideal as a shock absorber. It is expensive than open cell foam. It is strong and rigid. The ways in which the foam is used varies depending upon the type.

Types of Closed Cell Foam

• Neoprene Sponge Rubber
• EPDM Sponge Rubber
• Neoprene/EPDM Sponge Rubber Blend
• PVC or Vinyl Foam
• PVC/Nitrile or NBR Sponge Rubber
• Polyethylene Foam
• EVA Foam

In day to day life also we use lot of products made up of closed cell foam used in as Seals &Gaskets, it is mainly used in packaging also. Other uses are in joint filters, thermal insulation, pipe insulation foam or backer rod foam etc. These foams are resistance to Acid, Alkalis, oxidation, ozone. Gasoline & oil, Aromatic hydrocarbons, ketones so its highly recommended by Closed Cell Manufacturers for using the comparable to open cell foam.

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