Foam mattress is just a sort of bed that is made from memory. Besides polyurethane, it is also created from other styles of compounds. The substances which are included with the bed foams offers the capability to increase in thickness to it. Memory foam mattress can also be called visco elastic polyurethane foam. The bed was developed to be able to meet with up with the demand of the mattress customers. The real history of the Foam Mattress can be traced back to NASA's Ames Research Center. The Ames Research Center of NASA financed a task to create a bed foam which will help to alleviate pain of the astronauts due to g-forces back inside the 1970s. NASA thought the foam product must be used to comply with the design of the human body. Anyone could ultimately transfer of the position although creating a mold for your body will help resolve the problem. Around the body, inappropriate pressure points is going to be formed because of this. Later, ways to produce a foam that could adjust the your body's design was located by the study team from the Ames Research Center of NASA. It's a visco elastc foam that will evenly distribute the weight of the human body for the foam surface. Synthetic polyurethane foam product is employed whilst the foam memory. The bed manufacurers may incorporate various kinds substances to change the occurrence of the foam. The foam will have greater thickness, after the chemical is added. Besides, the manufacturer will put in a visco elastic foam product. The visco elastic foam is non toxic. Simply how much chemicals are utilized within the foam's production process detemins the foam weight. Most memory foam mattress includes a weight of 4 - 5lb. Lighter memory foam bed fat between 2 - 3 pound. The breakthrough induced Fagerdala World Foams of Sweden offer it for the customers and to try out it. In 1991, a company located in Sweden, Tempur Pedic sold the people the study mattresss foam in Sweden. After that, Tempurpedic bought the memory mattress foam for the people that are now living in Usa and Canada. The mattress of Tempur Pedic became very popular. The success of Tempurpedic had caused the producers sell them towards the local buyers and to make their particular versions of polyurethane foam mattresses.