Patent ID: 7553441
Filing Date: 2009-06-30
Classification: B29B,B29C,B29K,B29L,B65B,B65D,C08G,Y10T

Abstract:
1. A process for hot filling a heat-set container comprising the steps of: (1) heating a preform comprising a PET copolymer to temperature from above the glass transition temperature of the PET copolymer to about 140 C, wherein the PET copolymer consists essentially of a diacid component having repeat units from about 95 to about 99.75 mole percent terephthalic acid and from about 5 to about 0.25 mole percent naphthalenedicarboxylic acid and a diol component having repeat units from greater than about 98.4 mole percent ethylene glycol and less than about 1.6 mole percent diethylene glycol, based on 100 mole percent diacid component and 100 mole percent diol component; (2) positioning the preform in a mold heated to a temperature from about 60 C to about 200 C; (3) stretching and expanding the heated preform into the heated mold to form a container; (4) cooling the container, and (5) filling the container with a liquid heated above 85 C.