Abstract: Reinforced polyethylene terephthalate molding resin compounds with a glossy surface are provided which crystallize rapidly after being injection molded and which have engineering resin performance characteristics. In addition to polyethylene terephthalate and glass fibers, the compounds contain an aliphatic polyester, an ionic hydrocarbon polymer, an antioxidant, sodium stearate and polyester amide resin. Optionally, the compounds may contain a portion of glass flakes, mica or other filler. The compounds can be flame retarded with a brominated polystyrene and an antimonate without substantial loss of, or change in, properties.

Abstract: Expanding the parison while the mold side parts defining the walls of the blow-molding chamber, one part per wall, are moved to mold closed positions causes flash to be pinched between each mold part and provides good wall thickness near the edges of the final product.