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US 5,780,128 AGranted
Polyethylene preform and container
AssigneePepsiCo, Inc.
InventorSaid K. Farha
Life of this patent
Estimating the term…
Abstract
A polymeric composition which comprises post consumer PET and a first virgin PET is employed to form a laminate with a second virgin PET. The laminate is used in forming PET preforms which are blow molded into beverage containers.
Claims12
A preform comprising an open neck portion integrally adjacent a laminate body portion integrally adjacent a closed bottom portion;
- said laminate body portion including an outer ply formed of a polymeric composition comprising a post consumer PET having an intrinsic viscosity of between about 0.67 and about 0.75 and a first virgin PET, which is a copolymer of ethylene terephthalate and ethylene isophthalate, having an intrinsic viscosity of between about 0.77 and about 0.83 and an inner ply of a second virgin PET, which is a copolymer of ethylene terephthalate and ethylene isophthalate, having an intrinsic viscosity of between about 0.77 and about 0.83;
- said open neck and said closed bottom portions formed of said second virgin PET.
A container comprising an open neck portion integrally adjacent a laminate body portion integrally adjacent a closed bottom portion;
- said laminate body portion including an outer ply formed of a polymeric composition comprising a post consumer PET having an intrinsic viscosity of between about 0.67 and about 0.75 and a first virgin PET, which is a copolymer of ethylene terephthalate and ethylene isophthalate, having an intrinsic viscosity of between about 0.77 and about 0.83 and an inner ply of a second virgin PET, which is a copolymer of ethylene terephthalate and ethylene isophthalate, having an intrinsic viscosity of between about 0.77 and about 0.83;
- said open neck and said closed bottom portions formed of said second virgin polymer.
Dependencies are inferred from the claim text.