Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing
Reexamination Certificate
2004-07-22
2011-12-13
Patterson, Marc (Department: 1782)
Stock material or miscellaneous articles
Hollow or container type article
Polymer or resin containing
C428S034100, C428S034200, C428S035900, C428S036900
Reexamination Certificate
active
08075966
ABSTRACT:
A plastic preform, container or article includes a multilayer wall having at least one layer of a matrix resin, at least one layer of a barrier resin, an adhesion-promoting material blended with the barrier resin and/or matrix resin, and an active oxygen barrier composition blended with the barrier resin and/or matrix resin. The adhesion-promoting material promotes bonding between the barrier and matrix resin layers and includes an amine polymer, preferably an imine polymer having a number of available primary, secondary or tertiary amine groups. The matrix resin preferably is an ester-containing resin, such as PET. The barrier resin preferably is EVOH. The active oxygen barrier composition includes a metal with an additive compound, and may also include a host polymer.
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Graham Packaging Company, Ltd.
Patterson Marc
Rissman Hendricks & Oliverio LLP
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