GENERAL DESCRIPTION
A transparent copolyester with very high impact resistance, Spectar ® sheet is the brand name for extruded Polyethleneterephtalate Glycol (PETG) copolyester sheet.
PETG Copolyester sheet is tough, clear, versatile, easy to work with, chemically resistant, and affordable - making it well-suited for a variety of demanding sheet and glazing applications ranging from store displays to signage.
Spectar ® sheet meets all current food contact legislation and can be used in contact with food. The UV Grade is not intended for food contact.
PETG Copolyester is available ONLY in sheet form, in metric thicknesses of .5 to 6 mm (.020" to .236").
GENERAL PROPERTIES Spectar ® copolyester sheet is tough, yet it machines and thermoform easy. It can be cut with a laser or with a conventional table, band, or radial arm saws with blades commonly used for plastics - without leaving sharp edges and with minimal wear on equipment. It also has superior chemical resistance
PETG Copolyester sheet maintains exceptional clarity during fabrication, heating and vacuum forming without whitening. Surface scratches and scuff marks can be removed using a common heat gun.
Spectar ® Copolyester sheet can be cut, routed, welded, drilled, die-punched, bent cold or hot, and joined by screws, rivets, or bolts. It can be edge-polished, using sanding, solvents, flame polishing, or commercial edge finishing equipment.
PETG Copolyester sheet provides excellent material distribution and part definition during thermoforming - without pre-drying sheets. It forms clear, strong bonds with commercially available cements and solvents. The sheet accepts screen printing, painting, and hot stamping - even registration printing.
Spectar ® sheet causes less breakage overall - in shop, in transportation, in installation, and in use. Once in use, finished products enjoy a long life reducing replacement costs. And no special fabrication equipment is required.
TYPICAL APPLICATIONS • Crystal-clear • Outstanding formability with no need to predry • Cold-bends without hazing or cracking • Won't turn white when formed or bent • Tough, durable, and impact-resistant, allowing downgauging • UV-resistant resins available for outdoor applications • Resists chipping and cracking, safe to saw and drill • Can be punched, die-cut, laser-cut, welded, riveted, and bonded • Routes and edge-polishes smoothly • Can be screen-printed, painted, and hot-stamped • Complies with FDA regulations for food contact • Won't turn white with cleaning solutions • Common heat gun removes surface scratches and scuff marks • Available in standard and custom-matched colors • Odor-free • UL 94-V2 at 3mm thickness
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TYPICAL PROPERTIES of SPECTAR ® PETG | ||
| ASTM or UL test | Property | Spectar ® PETG |
| PHYSICAL | ||
| D792 | Density (lb/in³) (g/cm³) |
0.046 1.27 |
| D570 | Water Absorption, 24 hrs (%) | 0.1 - 0.3 |
| MECHANICAL | ||
| D638 | Tensile Strength (psi) | 3,800 - 4,500 |
| D638 | Tensile Modulus (psi) | 320,000 |
| D638 | Tensile Elongation at Break (%) | 50 |
| D790 | Flexural Strength (psi) | 10,300 - 12,000 |
| D790 | Flexural Modulus (psi) | 290,000 - 320,000 |
| D695 | Compressive Strength (psi) | - |
| D695 | Compressive Modulus (psi) | - |
| D785 | Hardness, Rockwell | R104 - M112 |
| D256 | IZOD Notched Impact (ft-lb/in) | 1.7 |
| THERMAL | ||
| D696 | Coefficient of Linear Thermal Expansion (x 10-5 in./in./°F) |
3.3 - 3.8 |
| D648 | Heat Deflection Temp (°F / °C) at 264 psi |
157 / 70 |
| D3418 | Sheet Forming Temp Range (°F / °C) | 250 - 320 / 120 - 160 |
| - | Max Operating Temp (°F / °C) | 150 / 65 |
| C177 | Thermal Conductivity (BTU-in/ft²-hr-°F) (x 10-4 cal/cm-sec-°C) |
- - |
| UL94 | Flammability Rating (2 mm thickness) | HB |
| ELECTRICAL | ||
| D149 | Dielectric Strength (V/mil) short time | 410 |
| D150 | Dielectric Constant at 1 KHz | 4.0 |
| D150 | Dissipation Factor at 1 KHz | 0.005 |
| OPTICAL | ||
| - | Light Transmission, minimum (%) | 86 |
| - | Refractive Index | 1.57 |
NOTE: The information contained herein are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers' complete material property datasheets.SPECTAR is a registered trade mark of Eastman Chemical Company.
All values at 73°F (23°C) unless otherwise noted.
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Copyright Boedeker Plastics, Inc.