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History of EPS
In 1965, the industry's first block molding plant was established in Grand Rapids, MI. Block molding plants manufacture blocks of EPS measuring from two to 16 feet in thickness. EPS blocks can be cut into any shape needed. Generally it is cut with hot wires into sheets for use as thermal insulation. Other uses for the large billets include flotation, "geofoam" landfill applications and other large-scale uses. Expanded polystyrene begins as a polystyrene bead or pellet. The pentane-loaded bead is then exposed to pressurized steam that causes the polystyrene to expand and mold into the desired shape and density needed. Manufacturing EPS does not involve the use of ozone depleting CFCs or HCFCs. The final product is a moisture resistant closed-cell structure that is comprised of 90 percent air. Defining logic, this plastic can possess a compressive strength of up to 40 psi. EPS possesses the physical and mechanical properties ideal for most insulating needs. As a closed cell structure, aging has no effect on the long-term thermal resistance. Due to its flexibility and versatility, it can be cut into sheets, slabs or any desired design to meet specific building code requirements as well as customized designs. EPS is utilized as insulation in walls, roofs and foundation as well as a component in structural insulated panels, insulated concrete forms and exterior and insulating form systems. Other growing applications include flotation devices, cold storage insulation and geofoam. 2.jpg) |
