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Foam, Styrofoam
Styrofoam is a trademark name for polystyrene thermal insulation material, manufactured by Dow Chemical Company. more...
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In 1941 reseachers in Dow's Chemical Physics Lab found a way to make foamed polystyrene. They had indeed "rediscovered" a method initially discovered by a Swedish inventor C. G. Munters. Dow acquired exclusive rights to practice Munter's patents and found ways to make large quantities of extruded polystyrene as a closed cell foam that resisted moisture. In recognition of its insulating properties, buoyancy and "unsinkability," it was originally adopted in 1942 by the Coast Guard for use in a six-man life raft. Styrofoam can be used for building materials including insulated sheathing, pipe insulation and floral and craft products. Styrofoam insulation has been used in many notable buildings and facilities in North America. The Dow product can be identified by its distinctive blue color.
Styrofoam can be used underneath roads and other structures to prevent soil disturbances due to seasonal freeze-thaw cycles.
The word styrofoam is sometimes improperly used by the general public in the United States and Canada as a generic term to indicate polystyrene foam, such as coffee cups, cooler or packaging material, which are typically white in color and are made of expanded polystyrene beads.
Read more at Wikipedia.org
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