Typical Film Thickness ~ 1.5 to 10 mils
Coverage ~ 107 to 160 sq ft per mil of coating
Typical Bake Schedules ~ 15 min. at 325F Low Temp, 15 min. at 375F Normal
Impact Range ~ 40 to 160 inch lbs
Pencil Hardness ~ H to 3H
Flexibility ~ 0.25 inch typical
The most familiar of these are the polyester/TGIC coatings originally used as clear coats, and later as metallic base coats on wheels. These coatings show excellent durability with good impact resistance, and, when covered with a clearcoat, durability approaches five years. With improvements in resin technology and increasing smoothness, the polyester/TGIC systems are approaching the look of acrylics.In addition to excellent weatherability, other advantages of polyester/TGIC systems include excellent gloss retention, over-bake color stability, good mechanical properties at high-film build, good salt-spray resistance, and a wide range of colors, including metallic effects and textures. Some of the drawbacks are that it is difficult to formulate a low-gloss finish, and to get very smooth coatings at film builds lower than 1.5 mils. Additionally, polyester/TGIC systems offer lower solvent resistance than the polyester/urethane chemistries.
Coverage ~ 107 to 160 sq ft per mil of coating
Typical Bake Schedules ~ 15 min. at 325F Low Temp, 15 min. at 375F Normal
Impact Range ~ 40 to 160 inch lbs
Pencil Hardness ~ H to 3H
Flexibility ~ 0.25 inch typical
The most familiar of these are the polyester/TGIC coatings originally used as clear coats, and later as metallic base coats on wheels. These coatings show excellent durability with good impact resistance, and, when covered with a clearcoat, durability approaches five years. With improvements in resin technology and increasing smoothness, the polyester/TGIC systems are approaching the look of acrylics.In addition to excellent weatherability, other advantages of polyester/TGIC systems include excellent gloss retention, over-bake color stability, good mechanical properties at high-film build, good salt-spray resistance, and a wide range of colors, including metallic effects and textures. Some of the drawbacks are that it is difficult to formulate a low-gloss finish, and to get very smooth coatings at film builds lower than 1.5 mils. Additionally, polyester/TGIC systems offer lower solvent resistance than the polyester/urethane chemistries.
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