Filter Foam

Filter Foam

Filter foam is open cell foam that allows air and water to pass through it while trapping and catching small particles like dust and dirt. They are used to maintain cleanliness and lengthen the lifespan of many different products, machines and systems in industrial and commercial settings. Around the house, they are most likely seen in aquariums to keep the water clean, vacuum cleaners to gather dirt, and clothes dryers to catch lint. Filter foam is used in speaker systems the protect delicate electronic machinery from dust, in small engines, air conditioning systems, automotive filtering systems, ventilators and charcoal filters for odor elimination. Products like black board erasers and paint brushes are manufactured from the same foam found in filtration and cleaning systems. Cleanroom supplies like scrubbers and wipers are often made of filter foam.

Filter foam is generally made of polyurethane and polyester or polyether polyol.  It's usually thin, flexible, soft and comes in large spools or rolls. It can be cut to any size, and doesn't tear easily. Open cell foams are put through a manufacturing process to ensure they have air pockets and are porous, spongy material. They aren't dense and are super absorbent, but are still able to trap and hold large amounts of small particle contaminants. They are efficient and keeping systems clean, have large holding capacities, and a high resistance, meaning they don't obstruct water or air flow. When they have reached their limit on dirt capacity, they may be washed and reused.