Delamination-resistant multilayer container, preform, article and method with oxygen barrier formulations
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United States of America Patent
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Dec 13, 2011
Grant Date -
Jan 26, 2006
app pub date -
Jul 22, 2004
filing date -
Jul 22, 2004
priority date (Note) -
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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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