Foam mattress can be a kind of bed that's produced from memory. Besides memory, it is also made from other forms of substances. The compounds that are put into the bed foams offers it the ability to increase in density. Memory foam mattress can be called visco elastic polyurethane foam. The bed was created to be able to meet the desire of the mattress customers. The Memory Foam Mattress' annals could be traced back again to NASA's Ames Research Center. NASA's Ames Research Center borrowed a project to create a mattress foam that will help to relieve back pain of the astronauts caused by gforces inside the 1970s. NASA assumed the foam product must be used to comply with your body's form. Anyone would eventually transfer of the position although making a mold for the body can help to solve the situation. As a result, incorrect stress points is going to be created around the body. Later, the study team from the Ames Research Center of NASA discovered a method to develop a foam that may evolve the the body's design. It's a elastc foam that can consistently distribute your body's weight towards the foam floor. In 1991, an organization situated in Sweden, Tempurpedic bought the people the study mattresss foam in Sweden. After that, Tempurpedic bought the memory mattress foam towards the people that reside in Usa and Canada. The mattress of Tempur Pedic became popular. The success of Tempurpedic had caused the producers offer them for the local consumers and to produce their particular variations of foam mattresses. https://www.amerisleep.com/mattresses.html Polyurethane foam product is used while the foam memory. The mattress manufacurers will add various kinds compounds to change the density of the foam. The foam can have higher density, following the substance is included. Besides, the manufacturer may add a viscoelastic foam product. The visco elastic foam is non-toxic. The foam weight is detemined by how much substances are utilized within the foam's production process. Lighter polyurethane foam bed fat in-between 2 - 3 pound.