Foam mattress is just a kind of mattress that is created from polyurethane. Besides polyurethane, it's also created from other styles of substances. The substances which are added to the bed foams allows the capability to increase in thickness to it. Memory foam mattress can be called viscoelastic memory foam. The mattress originated to be able to meet with the mattress shoppers' need. The Foam Mattress' annals might be traced back to NASA's Ames Research Center. NASA's Ames Research Center borrowed a project to style a bed foam which will help to relieve pain of the astronauts due to g-forces back within the 1970s. NASA considered that the foam product must be used to adapt to the form of your body. Anyone would eventually transfer of the position though developing a form for your body will help solve the situation. About the body, wrong pressure points will be established consequently. Later, the research team from NASA's Ames Research Center located a method to create a foam that may conform the the body's design. It's a visco elastc foam that may equally distribute the weight of the human body towards the foam surface. mattress-inquirer rating and evaluation The development induced Fagerdala World Foams of Sweden to try out it and promote the consumers it. In 1991, Tempurpedic, a business situated in Sweden offered the people the investigation mattresss foam in Sweden. After that, Tempur Pedic sold the memory mattress foam for the people that live in United States and Canada. Tempur Pedic's mattress became extremely popular. The achievement of Tempurpedic had caused the companies offer them for the local customers and to generate their particular variations of polyurethane foam mattresses. Polyurethane foam material can be used because the foam memory. The bed manufacurers will include several types of substances to change the occurrence of the foam. The foam will have greater thickness following the compound is added. Besides, a viscoelastic foam product will be added by the manufacturer. The visco elastic foam is nontoxic. How much compounds are used inside the manufacturing means of the foam detemins the foam weight. Most polyurethane foam mattress includes a fat of 4 - 5lb. Brighter memory foam bed weight inbetween 2 - 3 lb.