Barrier laminate containing partially aromatic nylon materials, blank constructed from the barrier laminate, and container constructed from the barrier laminate
OwnerTricia Reighardinventor
Life of this patent
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Abstract
Laminate structures provide an oxygen barrier for use in packaging of liquid and non-liquid (dry) products: preferably, fruits, citrus juices, teas, other beverages, and the like. The laminate structures contain at least one oxygen barrier layer of a partially aromatic nylon. Particularly useful partially aromatic nylons are those utilizing MXD6/MXDI chemistry. The partially aromatic nylon layer provides an oxygen barrier comparable to ethylene vinyl alcohol copolymer (EVOH) when used at high relative humidities. The partially aromatic nylon layer simplifies laminate structure and saves materials costs.
Claims21
An oxygen barrier laminate, comprising:
- a barrier layer including a partially aromatic nylon;
- a polyolefin layer;
- and
- a tie layer of an adhesive tie material bonding said barrier layer and said layer of polyolefin.
An oxygen barrier laminate, comprising:
- a paperboard substrate having an exterior and an interior surface;
- a first polyolefin layer coated on said exterior surface of said paperboard substrate;
- a partially aromatic nylon layer coated on said interior surface of said paperboard substrate;
- a tie layer of an adhesive material;
- and
- a second polyolefin layer forming a product contact surface.
An oxygen barrier laminate, comprising:
- a paperboard substrate having an exterior and an interior surface;
- a first polyolefin layer coated on said exterior surface of said paperboard substrate;
- a polyamide coated on said interior surface of said paperboard substrate;
- a barrier layer of partially aromatic nylon disposed interior to said polyamide layer;
- and
- a second polyolefin layer forming a product contact surface.
Dependencies are inferred from the claim text.