Memory foam mattress can be a type of bed that's produced from polyurethane. Besides polyurethane, it is also created from other forms of substances. The substances that are included with the bed foams presents the ability to increase in thickness to it. Memory foam mattress can also be called visco elastic polyurethane foam. The mattress was created to be able to meet the mattress shoppers' requirement. The Polyurethane Foam Mattress' annals could be traced back to the Ames Research Center of NASA. NASA's Ames Research Center backed a project to style a mattress foam that can help to relieve pain of the astronauts due to g-forces back in the 1970s. NASA believed the foam material must be applied to adapt to the design of the body. The person might eventually move out of the position though making a shape for the body can help to fix the problem. Because of this, improper stress points will soon be produced about the body. Later, ways to create a foam that will conform the the body's shape was found by the study staff from the Ames Research Center of NASA. It's a elastc foam that can consistently distribute your body's weight for the foam surface. Best mattress for back pain Synthetic polyurethane foam material can be used since the foam memory. The bed manufacurers can incorporate several types of compounds to alter the occurrence of the foam. The foam will have higher thickness following the compound is added. Besides, a visco elastic foam product will be added by the maker. The visco elastic foam is non-toxic. Simply how much substances are utilized inside the foam's manufacturing process detemins the foam fat. Most foam mattress features a weight of 4 - 5lb. Brighter memoryfoam bed weight among 2 - 3 lb. The discovery caused Fagerdala World Foams of Sweden to experiment with it and provide it towards the buyers. In 1991, an organization situated in Sweden, Tempurpedic offered the people the study mattresss foam in Sweden. After that, Tempur Pedic sold the memory mattress foam to the people that reside in Canada and United States. Tempur Pedic's bed became popular. Tempur Pedic's achievement had caused the producers to generate their particular versions of memory foam mattresses and sell them for the local buyers.