Memoryfoam mattress is a sort of bed that's created from memory. Besides memory, it is also produced from other styles of chemicals. The chemicals which might be included with the bed foams offers the ability to increase in density to it. Memory foam mattress is also called visco elastic polyurethane foam. The bed originated so that you can meet the need of the bed customers.The annals of the Foam Mattress may be traced back to the Ames Research Center of NASA. NASA's Ames Research Center funded a task to create a bed foam that will help to ease back pain of the astronauts caused by g-forces in the 1970s. NASA considered that the foam product must be used to comply with the shape of the body. The person would ultimately transfer of the position though developing a shape for that body will help fix the problem. Around the body, improper pressure points is going to be produced consequently. Later, a way to create a foam that can adjust the the body's shape was discovered by the investigation staff from NASA's Ames Research Center. It is a visco elastc foam that could consistently spread the weight of the human body to the foam surface.www.amerisleep.ca/as2.htmlSynthetic polyurethane foam product is employed because the foam memory. The bed manufacurers may add several kinds of chemicals to improve the thickness of the foam. The foam can have greater density, following the substance is added. Besides, the manufacturer will add a viscoelastic foam material. The visco elastic foam is non toxic. The foam weight is detemined by how much chemicals are employed in the foam's manufacturing process. Brighter memory foam mattress weight in between 2 - 3 pound.The finding caused Fagerdala World Foams of Sweden sell it towards the consumers and to experiment with it. In 1991, a business based in Sweden, Tempur Pedic offered the research mattresss foam to the people. After that, Tempurpedic bought the memory mattress foam to the people that reside in Usa and Canada. The mattress of Tempurpedic became very popular. Tempur Pedic's achievement had caused the makers to generate their own designs of foam mattresses and offer them for the local consumers.