INJECTION MOLDED PREFORM, STRETCH BLOW MOLDED CONTAINER AND METHOD FOR REDUCING THE CYCLE TIME FOR MAKING IT

摘要

An injection molded preform (10, 11) for making a stretch blow molded container (22) having an overall stretch ratio of from about 8 to about 12, wherein the overall stretch ratio is a product of a hoop stx~etch ratio and an axial stretch ratio, wherein the hoop stretch ratio is from about 4.5 to about 5.4, wherein the axial stretch ratio is from about 1.5 to about 2.2, and wherein the preform comprises a LNSR PET Copolymer having a free blow volume of from about 400 to less than about 650 ml measured at 100 0C and 90 psi using a 25 gram weight preform designed for a 500 ml container with a maximum diameter of 65 mm and a height of 200 mm from below the container finish and having a hoop stretch ratio of 5.5 and an axial stretch ratio of 2.6. This invention also relates to a method of making such preforms and stretch blow molded containers and methods of making the same .