Memoryfoam mattress is just a kind of bed that is produced from memory. Besides memory, it is also produced from other styles of compounds. The chemicals that are put into the bed foams provides the ability to increase in thickness to it. Memory foam mattress is also called visco elastic memory foam. The bed was created so that you can meet up with the need of the bed buyers. The Polyurethane Foam Mattress' history might be traced back to NASA's Ames Research Center. NASA's Ames Research Center funded a project to style a bed foam that will help to ease backpain of the astronauts due to g-forces in the 1970s. NASA assumed the foam product should be used to conform to the design of the body. Anyone might eventually transfer of the career although making a form for the body will help solve the situation. Because of this, wrong stress points is going to be created about the body. Later, a method to create a foam that can adjust the the body's condition was discovered by the investigation group from the Ames Research Center of NASA. It's a visco foam that may equally distribute the weight of your body to the foam floor. www.mattress-inquirer.com/spa-sensations-memory-foam-mattress-reviews/ Polyurethane foam product is used as the foam memory. The bed manufacurers will incorporate several kinds of compounds to alter the thickness of the foam. The foam will have greater density following the chemical is included. Besides, a viscoelastic foam product will be added by the manufacturer. The visco elastic foam is non-toxic. Simply how much compounds are used in the foam's manufacturing process detemins the foam weight. Many memory foam mattress includes a weight of 4 - 5lb. Lighter polyurethane foam mattress fat in between 2 - 3 pound. In 1991, an organization based in Sweden, Tempurpedic offered the people the research mattresss foam in Sweden. Next, Tempur Pedic bought the memory mattress foam for the people that live-in Canada and United States. The mattress of Tempurpedic became extremely popular. The success of Tempur Pedic had caused the manufacturers provide them for the local buyers and to make their own versions of memory foam beds.