Multilayered package with barrier properties
AssigneeValspar Sourcing, Inc.
InventorsPaul E. Share, Keith R. Pillage
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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.
Claims15
A multi-layered container, comprising:
- a layer of a formable polymer;
- and
- a blend layer comprising a blend of:
- (i) between 10 and 60% by weight of a polyethylene terephthalate material,
- (ii) between 45 and 60% by weight of a polyamide material,
- (iii) 50 to 10,000 ppm of an oxygen scavenging material, and
- wherein said blend layer comprises between about 3 and 6 percent of the total wall thickness of the container and wherein the percent polyamide material in the entire container is between 1.35 and 3.6% by weight.
Dependencies are inferred from the claim text.