EXTRUDED POLYESTER

EXTRUDED POLYESTER

POLYESTERPolyester, also known as Terylene, is a category of polymers which contain the Esther functional group in their main chain.RAW MATERIALS:Coal AirWaterPetroleum.EXTRUDED POLYESTERExtruded polystyrene is a type of plastic used to make products ranging from building materials to storage containers.It is a rigid cellular plastic foam material derived from petroleum and natural gas by-products. Styrene is produced from benzene and ethylene, and is polymerised in the presence of catalysts, usually organic peroxides. The beads of resin are subjected to steam, which causes the thermoplastic polystyrene to soften and expand up to 40 times its original volume.

THE EXTRUSION PROCESS

Extruded polystyrene foam begins with solid polystyrene crystals. The crystals, along with special additives and a blowing agent, are fed into an extruder. Within the extruder the mixture is combined and melted, under controlled conditions of high temperature and pressure, into a viscous plastic fluid. The hot, thick liquid is then forced in a continuous process through a die. As it emerges from the die it expands to a foam, is shaped, cooled, and trimmed to dimension.This continuous extrusion process results in a unique foam product with a uniform closed-cell structure, a smooth continuous skin.Thicknesses between 20 and 200 mm can be produced

CHARACTERISTICS Absorbs only minimum quantities of moisture. It is only slightly resilient and is resistant to rotting and aging. Extruded polystyrene foam is not resistant to UV light.

CHEMICAL RESISTANCEResistant to many common chemicals such as: acids, bases, water and water-based paints, alcohol and alcohol-based paints, brine or salt water, cement and mortars, asphalt, etc. However, petroleum-based products may attack the foam, such as: Aromatic and chlorinated hydrocarbons, gasoline or fuel oil, cut-back asphalts, naphthas or paint thinner, oil-base paint, oil-base insecticides or wood preservatives, polyester resins, etc.SOIL COMPATIBILITYCertiFoam is unaffected by substances normally found in soil (i.e. acids, alkalis, bacteria, etc.) It will not corrode, rot, or support the growth of mold, mildew or soil microorganisms. Precautions should be taken when insulation is in contact with the soil to prevent hidden entry through the foam by vermin or insect pests.

OUTDOOR EXPOSURE AND STORAGEIT is not affected by the weather and may be stored outside. Prolonged exposure to UV radiation in sunlight may cause the surface to become pale and dusty. This will have no significant effect on insulating value unless the surface is eroded and thickness is reduced. Surface dust should be brushed off before applying adhesives or finishes. Extruded polystyrene foam is easy to handle and available in a variety of sizes and compressive strengths to suit varied application requirements.

Polystyrene Grades and Thermal ConductivityThermal conductivity for our expanded polystyrene sheet grades is shown in the reference below.SL Gradek = 0.041 W/mk*S Gradek = 0.0397 W/mk*M Gradek = 0.0383 W/mk*H Gradek = 0.0368 W/mk*VH Gradek = 0.0352 W/mk** k value @ reference temperature 25C

ADVANTAGESIt is a durable, economical material with all of the following advantages;LightweightEasy to handleDurableStrong & flexibleLong term R-valueLow water absorptionShock absorbentVibration dampenerBuoyantComparatively inertLow combustibilityNo food value for insects & rodentsDimensionally stableRecyclable

APPLICATIONSRoofs: Flat roofs, inverted roofs . CeilingsFloor insulation with high load-bearing capacity.Walls: Plinth area Basements/cellars: Perimeter insulation in presence of moisture Swimming pool insulation Load bearing insulation, special applications.Airport runway insulationHighways insulation. INTERIOR WALL INSULATION HIGHWAYS INSULATION

ROOFING INSULATION SWIMMING POOLS

DETAIL