Memory foam mattress can be a kind of mattress that's produced from memory. Besides polyurethane, it's also made from other types of chemicals. The compounds that are included with the mattress foams presents the ability to increase in occurrence to it. Memory foam mattress can also be called viscoelastic memory foam. The mattress originated to be able to meet with the bed shoppers' need. The real history of the Polyurethane Foam Mattress could be traced back again to NASA's Ames Research Center. NASA's Ames Research Center backed a project to create a mattress foam that will help to alleviate pain of the astronauts due to g-forces back in the 1970s. NASA believed that the foam product must be applied to adapt to the form of the body. Anyone might eventually move out of the career although developing a form for your body can help resolve the issue. Around the body, inappropriate pressure points will soon be formed consequently. Later, the investigation group from NASA's Ames Research Center discovered a way to create a foam that could adjust the your body's shape. It's a visco foam that could consistently distribute the weight of your body to the foam floor. Best mattress for back pain In 1991, Tempurpedic, an organization located in Sweden sold the investigation mattresss foam towards the people. Next, Tempur Pedic sold the memory mattress foam for the people that live-in Canada and United States. The bed of Tempur Pedic became popular. Tempur Pedic's success had caused the makers to produce their own designs of memory foam mattresses and provide them towards the local buyers. Polyurethane foam material is used as the foam memory. The mattress manufacurers will add several types of compounds to improve the density of the foam. The foam could have higher thickness after the compound is included. Besides, a visco elastic foam material will be added by producer. The visco elastic foam is nontoxic. The foam weight is detemined by simply how much compounds are employed within the foam's manufacturing process. Lighter memoryfoam mattress fat inbetween 2 - 3 pound.