Foam mattress is a sort of bed that's created from polyurethane. Besides memory, it's also produced from other styles of substances. The chemicals which might be added to the mattress foams gives the capacity to increase in thickness to it. Memory foam mattress can also be called viscoelastic polyurethane foam. The bed originated so that you can meet with the mattress shoppers' desire. The history of the Foam Mattress could be traced back again to NASA's Ames Research Center. The Ames Research Center of NASA backed a task to create a bed foam that will help to alleviate pain of the astronauts due to g-forces back inside the 1970s. NASA assumed that the foam material must be applied to conform to your body's design. Though developing a mold for your body can help fix the issue, the person would eventually move out of the career. Around the body, inappropriate stress points will be created because of this. Later, the study staff from the Ames Research Center of NASA found a way to create a foam that could evolve the your body's appearance. It is a visco foam that can equally distribute your body's weight to the foam surface. In 1991, Tempurpedic, an organization based in Sweden sold the study mattresss foam for the people. Next, Tempurpedic offered the memory mattress foam towards the people that live in Canada and United States. The mattress of Tempurpedic became extremely popular. The achievement of Tempur Pedic had caused the manufacturers to create their particular variations of polyurethane foam mattresses and promote them to the local people. Polyurethane foam product is employed since the foam memory. The bed manufacurers can include several kinds of chemicals to change the occurrence of the foam. After the substance is added, the foam will have higher thickness. Besides, the manufacturer may put in a viscoelastic foam product. The viscoelastic foam is nontoxic. Howmuch chemicals are utilized inside the production procedure for the foam detemins the foam weight. Most memory foam mattress includes a weight of 4 - 5lb. Brighter foam mattress fat in between 2 - 3 pound.