11-09-1992 Council Packet - Laserfiche WebLink

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about STYROFOAM brand plastic foams STYROFOAM brand products are made and marketed only by The Dow Chemical Company. Today there are seven basic ST^ ROFOAM brand products: • STYROFOAM brand insiilHlion — Blue plastic foam be »rds with eithei '<'ngue-and- groove or flat edges. Used to ini date residential and commercial buildings. • STYROFOAM brand plastic foam decora tive billets and boards — For use in the fabrica tion of craft, floral, and display items. The decorative billets are green or white; the decorative boards are green only. • STYROFOAM brand plastic foam buoyancy billets — For use in docks, rafts, marinas, etc. The color is blue. • STYROFOAM brand insulation mastic — An adhesive used to install STYROFOAM brand insulation. • STYROFOAM FP brand foundation panels — Blue plastic foam boards with a pro tective and decorative pebbled coating. Used to cover and insulate foundations of houses and light commercial buildings. • STYROFOAM brand foundation coating — A protective brush-on coating for STYROFOAM brand insulation installed on exterior foundation walls. • STYROFOAM LIGHTGUARD brand insulation — A lightweight roofing panel covered vrith a layer of latex-modified concrete. Insulates and protects roof membrane. All of the STYROFOAM plastic foams are identical in that all are made: • From the same chemical starting material — solid granules called pol\>st\^rene plastic. • By an extrusion process involving technology and know-how developed by Dow. • Only in rigid bulk forms — as billets or boards. extruding “bubbles’’ Cut through a piece of STYROFOAM plastic foam and the closed-cell structure becomes visible. It looks like a mass of bubbles, each one sharing a wall with its neighbor. The Dow process creating these bubbles takes place in an extruder. Polystyrene granules fed into the extruder are melted into a thick fluid. Then a mixture of gases, called a “blowing agent,” is injected to foam the fluid into a mass of bubbles. Heat and pressure are controlled so that the mass of bubbles begins to stiffen or “set” At the same i me, the solidifying mass is extruded — pushed out — through a die which shapes it as a billet or board. The clostd cell structure of STYROFOAM plastic foams is shown here. materials, Including ^JFQAM^S bjrand DroducS^ryco& ^heiite'of STYROFOAM ^in^^u^ons on handling nnd In an extruder, a solidifying mass of polystyrene foam is pushed through a die, creating a board of STYROFOAM brand plastic foam.