Spectar Copolyester Eastman Chemical Company Copolyester Eastman Spectar copolyester (PETG) extrudes into plastic sheet that is sparkling clear, tough, chemically resistant, odor-free, versatile, easy to work with and affordable. Its toughness allows fabricators to use thinner-gauge sheet than with other common materials, resulting in lower material costs. Yet it can be extruded into sheets as thick as 12 mm (1/2 in.). It extrudes at a low temperature and will not crystallize or develop a crystalline haze. Cleaning solutions will not turn Eastman Spectar copolyester white. It is easy to fabricate, allowing greater design freedom. It can be laser cut, routed, welded, drilled, die-punched, bent hot or cold, or joined by screws, rivets, or bolts. It can also be cut on conventional table, band, or radial-arm saws with blades commonly used for plastic. Spectar copolyester can be vacuum-formed at lower temperatures than other plastics without predrying the sheet. Eastman Spectar copolyester can be finished easily. Its edges can be polished by using commercial edge-finishing equipment, sanding, solvents, flame-polishing or buffing. It forms clear, strong bonds with commercially available cements and solvents. It accepts screen-printing, painting, and hot-stamping easily. Surface scratches or scuff marks can be removed using a common heat gun

PETG,PCTG,PCTA都屬于是一種非結晶型共聚聚酯的高透明塑料.PETG塑料制成的板材通常比通用壓克力堅韌15至20倍,，比抗沖改性的壓克力堅韌5至10倍,。PETG具有玻璃一樣的透明度和接近玻璃的密度,，很好的光澤度，耐化學腐蝕,，耐沖擊可制成復雜外形容器的包裝,，具有高吸塑力，高光澤,，低霧度,，易于印刷，不易脫落

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