Memory foam mattress is a kind of mattress that's created from memory. Besides memory, it is also created from other forms of chemicals. The compounds that are added to the bed foams provides it the capability to increase in density. Memory foam mattress can also be called visco elastic memory foam. The bed was developed in order to meet up with the demand of the bed customers. The annals of the Polyurethane Foam Mattress may be traced back again to the Ames Research Center of NASA. NASA's Ames Research Center funded a project to design a bed foam which will help to ease back pain of the astronauts due to g-forces inside the 1970s. NASA assumed the foam material must be applied to comply with the form of your body. Though creating a shape for that body will help solve the issue, the individual might ultimately move out of the positioning. As a result, improper stress points will soon be produced to the body. Later, the research staff from NASA's Ames Research Center found a method to create a foam that could evolve the your body's condition. It is a visco elastc foam that could consistently distribute the weight of the human body for the foam surface. http://www.thebest-mattress.com The development triggered Fagerdala World Foams of Sweden sell the buyers it and to test out it. In 1991, Tempurpedic, a business based in Sweden offered the investigation mattresss foam towards the people. After that, Tempurpedic bought the memory mattress foam for the people that live-in Usa and Canada. Tempur Pedic's mattress became popular. Tempur Pedic's success had caused the makers to create their particular designs of polyurethane foam mattresses and offer them towards the local people. Polyurethane foam product can be used because the foam memory. The bed manufacurers will incorporate various kinds substances to alter the density of the foam. Following the substance is included, the foam will have higher density. Besides, a viscoelastic foam product will be added by the maker. The viscoelastic foam is nontoxic. The foam weight is detemined by howmuch substances are utilized in the manufacturing process of the foam. Lighter polyurethane foam bed weight inbetween 2 - 3 pound.