method for forming polyethylene or polypropylene terephthalate resins, preform, bottle, thermoformed article and method for injection blow molding

摘要

METHOD FOR FORMING POLYETHYLENE OR POLYPROPYLENE TEREPHALATE RESINS, FORM, BOTTLE, THERMOFORMED ARTICLE AND METHOD FOR INJECTION OF BLOW MOLDING. The present invention relates to the reheating characteristics of polypropylene and polyethylene resins, including reheating time and resin coloring, which are enhanced by the addition of carbon black with a primary particle size in the range of 200 to 200 ° C. 500 nm as an infrared absorber. Thermal carbon blacks having this primary particle size are preferred over Furnace carbon blacks. Injection stretch blow molding bottles and other thermoformed products are manufactured from infrared absorbing carbon black resins.