Multilayered package with barrier properties

Details Multilayered package with barrier properties Multilayered package with barrier properties

2005-08-23

2005-08-23

Miggins, Michael C. (Department: 1772)

Stock material or miscellaneous articles

Composite

Of polyamide

C428S475200, C428S542800, C428S036700, C428S036600, C428S036910, C215S012200

Reexamination Certificate

active

06933055

ABSTRACT:
The present invention provides compositions useful as a barrier layer in, for example, packaging products. The compositions generally comprise a blend of (i) a polyester resin, preferably an aromatic polyester resin such as polyethylene terephthalate (PET) and (ii) a polyamide material (e.g., MXD6). The blend optionally may further comprise (iii) an oxygen scavenging material. The present invention also provides containers (e.g., containers formed by expansion of preforms) having a multilayered body-forming portion including: a layer comprising the aforementioned blend; and one or more layers of a formable polymer composition. The present invention also provides methods of making such containers.

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