Foam mattress is just a type of bed that's made from polyurethane. Besides memory, it is also made from other forms of chemicals. The substances which might be put into the mattress foams gives it the capacity to increase in density. Memory foam mattress can be called viscoelastic memory foam. The bed was developed to be able to meet the bed shoppers' requirement. The real history of the Memory Foam Mattress could be traced back to the Ames Research Center of NASA. The Ames Research Center of NASA financed a task to style a bed foam which will help to relieve backpain of the astronauts caused by g-forces inside the 1970s. NASA thought the foam material should be applied to adapt to your body's design. Although developing a shape for your body can help solve the situation, anyone would eventually move out of the position. Consequently, incorrect stress points will be produced on the body. Later, a method to develop a foam that will evolve the the body's appearance was found by the study team from the Ames Research Center of NASA. It is a visco elastc foam that may consistently distribute the body's weight for the foam area. http://www.memoryfoammattress-guide.org/labor-day-sales-memory-foam-mattresses/ In 1991, Tempurpedic, a company situated in Sweden offered the investigation mattresss foam to the people. After that, Tempur Pedic bought the memory mattress foam towards the people that are now living in United States and Canada. Tempurpedic's mattress became popular. Tempur Pedic's achievement had caused the makers to make their particular variations of memory foam mattresses and promote them to the local consumers. Polyurethane foam product can be used as the foam memory. The mattress manufacurers may add several kinds of compounds to change the density of the foam. After the substance is added, the foam will have higher density. Besides, a viscoelastic foam material will be added by producer. The visco elastic foam is non toxic. Simply how much chemicals are utilized within the foam's manufacturing process detemins the foam fat. Lighter polyurethane foam mattress fat among 2 - 3 lb.