Memory foam is polyurethane with additional chemicals increasing its viscosity and density. It is often referred to as "visco-elastic" polyurethane foam, or low-resilience polyurethane foam (see LRPu). Higher-density memory foam softens in reaction to body heat, allowing it to mold to a warm body in a few minutes. A lower-density memory foam is pressure-sensitive and molds quickly to the shape of a body pressing against it, returning to its original shape once the pressure is removed. Faster speed of recovery of a foam to its original shape after a weight is removed is sometimes claimed as an advantage by memory-foam mattress producers, who may talk of "newer generation" foams with "faster recovery."
Read more about Memory Foam: History, Properties, Hazards
Other articles related to "foam, foams, memory foam, memory foams":
1926 Dunlop introduced a technology to produce vulcanized rubber latex foam ... Similar foams still are used in latex mattresses and pillows (hence the name Dunlopillo) ... more advanced technology to produce synthetic foam rubber mattresses and pillows enabled factories to mass-market latex foam and reduce the consumption of ...
... Memory foam mattresses use conforming visco-elastic foam over firmer polyurethane base foam ... are achieved by varying the thickness, weight and formulation of the visco-elastic foams and the base foams ... Latex and memory foam mattresses each provide a unique feel ...
... When new, some memory foams give off a distinct chemical odor, which many people find unpleasant and some say is akin to the smell of paint ... Emissions from memory foam mattresses may directly cause more respiratory irritation than other mattresses however mildew and house dust mites may not occur as frequently, so asthma ... Memory foam, like other polyurethane products, can be combustible ...
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