Large polyester containers and method for making same
AssigneeEastman Chemical Company
InventorHarold Blake Sprayberry
Life of this patent
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Abstract
The present invention relates to a large molded polyester container weighing greater than about 200, and preferably between about 200 and about 800 grams. Specifically, the present invention relates to polyester containers having a volume of several gallons. In one embodiment the container is a bottle formed from a diacid component comprising up to about 96.5 mol % terephthalic acid or naphthalene dicarboxylic acid and a glycol component, wherein said polyester possesses an IV of about 0.75 to about 0.85.
Claims13
A stretch blow molded polyester container weighing greater than about 200 grams, being substantially free from crystalline haze wherein said polyester is formed from poly(ethylene terephthalate) or poly(ethylene naphthalenedicarboxylate) comprising about 4 mol % to about 10 mol % cyclohexane dimethanol, or about 6 mol % to about 17 mol % isophthalic acid, or mixtures thereof, wherein said polyester possesses an intrinsic viscosity of about 0.75 dl/g to about 0.85 dl/g.
A method for making a container comprising forming a preform from between about 200 and about 800 grams of a polyester formed from a diacid component comprising up to about 96.5 mol % terephthalic acid or naphthalene dicarboxylic acid and a glycol component comprising ethylene glycol, wherein said polyester possesses an intrinsic viscosity of about 0.75 to about 0.85;
- and stretch blow molding said preform into a container.
Dependencies are inferred from the claim text.