Foam mattress can be a kind of mattress that is created from polyurethane. Besides polyurethane, it's also created from other forms of compounds. The compounds that are put into the bed foams offers the capacity to increase in thickness to it. Memory foam mattress can also be called viscoelastic memory foam. The mattress was created as a way to meet with the mattress shoppers' desire. The real history of the Polyurethane Foam Mattress can be traced back to NASA's Ames Research Center. The Ames Research Center of NASA funded a task to style a bed foam that will help to alleviate pain of the astronauts caused by g-forces back in the 1970s. NASA believed the foam material ought to be used to conform to the form of your body. The person could ultimately transfer of the career, although making a mold for that body will help resolve the problem. To the body, incorrect pressure points will soon be created as a result. Later, the research group from the Ames Research Center of NASA located a method to create a foam that may evolve the your body's appearance. It's a visco elastc foam that could evenly spread the human body's weight for the foam area. www.mattress-inquirer.com/spa-sensations-memory-foam-mattress-reviews/ Synthetic polyurethane foam product can be used whilst the foam memory. The bed manufacurers will add several types of substances to change the thickness of the foam. After the compound is included, the foam could have higher thickness. Besides, a viscoelastic foam material will be added by the maker. The visco elastic foam is non-toxic. The foam weight is detemined by how much substances are employed inside the manufacturing process of the foam. Most memoryfoam mattress features a weight of 4 - 5lb. Brighter memoryfoam mattress fat among 2 - 3 lb. In 1991, Tempurpedic, a business situated in Sweden sold the study mattresss foam to the people in Sweden. After that, Tempurpedic offered the memory mattress foam for the people that reside in Usa and Canada. The mattress of Tempurpedic became very popular. Tempur Pedic's achievement had caused the manufacturers to create their particular variations of memory foam beds and sell them for the local consumers.