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Open-Cell Foam vs. Closed-Cell Foam

Open-cell foam acts like a spring and rebounds back after it is compressed. A foam is considered open-cell when more than half of its cells are open. Open-cell foams have more airflow than closed-cell foam and is softer and more flexible. 

Closed-cell foam’s cells are closed off by walls and do not interconnect with other cells. The cells are packed tightly together provided more durability and ideal for heavy-duty applications.

Open-Cell Foam

We fabricate many types of open-cell foams. Here are some of the most common:

Polyurethane – known for softer, cushioning aspects, this foam is also capable providing adequate support to counteract the weight of a person or object. These foams come in a wide range of densities and can be used for cushioning, vibration dampening, compression, and energy absorption. Commonly found in bedding, furniture, packaging, medical positioning aids, pet beds, cushions, etc. 

Polyester – This foam is known for a consistent cell-structure and well suited for reticulation, or filtration foam products. In products that will come in contact with gases such as carbon dioxide and nitrogen, polyester is ideal. Found in sound absorption, sponges, flame retardant uses, filters and packaging. 

Polyether – Known for its cushioning and supportive properties, it is ideal for products that come in contact with liquids. Found in filters, sponges, sound absorption, insulation, cushions, vibration dampening, and more uses. 

Closed-Cell Foam

There are many different closed-cell foams we shape for various uses. Below are a few examples:

Polyethylene (PE) – Laminated and Extruded – these foams are more rigid than open-cell foam and have several applications. It can with stand large amounts of pressure without losing its supportive and cushioning features. These foams are durable and come in a range of densities, as well as a recycled option. Also available with anti-static properties. Commonly found in a wide variety of packaging products and other applications.

Crosslinked Polyethylene (XLPE) – crosslinked foam is an excellent option that is known for being lightweight, non-dusting, and a uniform cell structure. It is commonly found in protective packaging that requires products to remain blemish and scratch-free, sound and vibration absorption/dampening, exercise products, floor mats, and several other uses. 

Expanded Polyethylene and Polypropylene – these foams have a higher tensile strength than crosslinked and extruded foam. Known for being lightweight, meeting MIL-specs, high load capacity, moisture resistant, less concavity when die-cut, and vibration dampening. Commonly found in packaging, automotive rack and returnable dunnage, tote inserts, and flotation devices. 

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