Memoryfoam mattress is a type of bed that is made from polyurethane. Besides polyurethane, it is also created from other types of chemicals. The compounds which might be added to the bed foams presents the ability to increase in thickness to it. Memory foam mattress can be called viscoelastic polyurethane foam. The mattress originated so that you can meet the bed shoppers' need. The Foam Mattress' real history can be traced back again to the Ames Research Center of NASA. The Ames Research Center of NASA funded a project to style a bed foam that will help to ease back pain of the astronauts due to g-forces in the 1970s. NASA thought the foam material should be used to adapt to the form of your body. Anyone would eventually move-out of the positioning, though developing a mold for your body can help to solve the issue. On the body, incorrect pressure points will be formed consequently. Later, ways to create a foam that could conform the the body's design was discovered by the study staff from NASA's Ames Research Center. It's a elastc foam that will consistently spread the weight of the body to the foam area. http://www.memoryfoammattress-guide.org/labor-day-sales-memory-foam-mattresses/ The breakthrough induced Fagerdala World Foams of Sweden to try out it and promote it to the consumers. In 1991, Tempur Pedic, a company based in Sweden offered the people the study mattresss foam in Sweden. Next, Tempurpedic offered the memory mattress foam to the people that live-in Canada and United States. Tempur Pedic's bed became very popular. Tempur Pedic's achievement had caused the suppliers promote them to the local customers and to produce their particular designs of memory foam beds. Polyurethane foam material is employed while the foam memory. The bed manufacurers can include various kinds compounds to improve the occurrence of the foam. The foam could have higher thickness following the compound is included. Besides, the maker will add a visco elastic foam product. The visco elastic foam is nontoxic. Just how much compounds are utilized inside the production process of the foam detemins the foam weight. Lighter memory foam bed fat in between 2 - 3 lb.