Foam mattress can be a sort of bed that's created from polyurethane. Besides polyurethane, it's also made from other styles of chemicals. The substances which are put into the mattress foams presents the capability to increase in thickness to it. Memory foam mattress can be called visco elastic memory foam. The mattress was created as a way to meet the bed shoppers' demand. The Foam Mattress' history might be traced back again to the Ames Research Center of NASA. The Ames Research Center of NASA funded a project to create a mattress foam that will help to relieve pain of the astronauts due to g-forces back inside the 1970s. NASA thought that the foam material ought to be used to adapt to the human body's shape. Though developing a form for that body can help to resolve the situation, anyone might eventually transfer of the positioning. Around the body, improper stress points is going to be formed consequently. Later, the investigation staff from the Ames Research Center of NASA identified a method to create a foam that will conform the your body's design. It's a visco foam that can consistently spread the weight of your body for the foam area. Synthetic polyurethane foam product is used whilst the foam memory. The mattress manufacurers may add several kinds of substances to change the occurrence of the foam. Following the chemical is added, the foam can have greater density. Besides, a visco elastic foam product will be added by the manufacturer. The visco elastic foam is non toxic. Howmuch chemicals are employed in the manufacturing process of the foam detemins the foam weight. Most polyurethane foam mattress has a weight of 4 - 5lb. Brighter memory foam mattress weight in between 2 - 3 pound. The development induced Fagerdala World Foams of Sweden to test out it and promote it towards the customers. In 1991, an organization based in Sweden, Tempurpedic bought the people the study mattresss foam in Sweden. Next, Tempurpedic sold the memory mattress foam towards the people that are now living in Canada and United States. The bed of Tempurpedic became highly popular. Tempur Pedic's success had caused the makers to produce their own designs of foam beds and promote them to the local customers.