Nomenclature

Petra grades fall into two categories: glass reinforced grades and glass/mineral reinforced grades. The basic nomenclature utilizes a numeric grade descriptor and a color designator. In certain cases an additive suffix is utilized. Grades are generally available in natural or black. Natural or uncolored grades do not contain a color descriptor in the product name.

Glass Reinforced Grades
110 = 15% glass
115FR = 15% glass, flame retardant, homopolymer type PET
130 = 30% glass
130FR = 30%glass, flame retardant
330FR = 30% glass, flame retardant, homopolymer type PET
140 = 45% glass
7030 = 30% glass, improved surface and flow; Paint Free PETRA
7330 = 30%, improved fatigue resistance – Next Generation PETRA
7535 = 35%, improved fatigue resistance – Next Generation PETRA

Glass/Mineral Reinforced Grades
230 = 35% glass/mineral
239 = 35% glass/mineral, non-plasticized
7235GM = 35% glass/mineral, improved surface and flow