Foam mattress is just a form of mattress that is produced from memory. Besides memory, it is also produced from other forms of chemicals. The chemicals that are added to the mattress foams gives the ability to increase in density to it. Memory foam mattress can be called viscoelastic polyurethane foam. The mattress was developed so that you can meet with up with the desire of the bed buyers. The real history of the Polyurethane Foam Mattress may 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 due to g-forces back within the 1970s. NASA thought that the foam product ought to be applied to conform to the human body's form. Anyone would eventually move-out of the positioning, although developing a mold for that body can help to solve the problem. About the body, inappropriate pressure points will soon be formed as a result. Later, the study group from the Ames Research Center of NASA found ways to produce a foam that could adapt the your body's condition. It's a elastc foam that can equally distribute the body's weight to the foam floor. www.mattress-inquirer.com/spa-sensations-memory-foam-mattress-reviews/ The finding caused Fagerdala World Foams of Sweden promote it towards the buyers and to experiment with it. In 1991, an organization situated in Sweden, Tempurpedic sold the investigation mattresss foam for the people in Sweden. Next, Tempur Pedic bought the memory mattress foam for the people that live in United States and Canada. Tempur Pedic's bed became extremely popular. Tempur Pedic's success had caused the makers promote them for the local buyers and to generate their particular versions of polyurethane foam mattresses. Synthetic polyurethane foam product is employed because the foam memory. The bed manufacurers will include various kinds substances to alter the thickness of the foam. The foam may have higher thickness, following the compound is included. Besides, a viscoelastic foam product will be added by the manufacturer. The visco elastic foam is non toxic. Simply how much substances are employed within the foam's production process detemins the foam weight. Brighter memoryfoam mattress weight between 2 - 3 lb.