Transparent high barrier multilayer structure

Details Transparent high barrier multilayer structure Transparent high barrier multilayer structure

1997-03-14

1999-06-29

Achutamurthy, Ponnathapura

Stock material or miscellaneous articles

Composite

Of silicon containing

428448, 428435, 428430, 4284744, 428 341, 428 346, 428 347, 428336, 428480, 428 366, 428 357, 428323, 428349, 524789, B32B 904, B32B 1710, B32B 2706, B29D 2200

Patent

active

059166851

ABSTRACT:
A transparent multilayer structure is disclosed such as a flexible self-supporting container for a flowable food product such as fruit juice. The transparent multilayer structure possesses superior barrier properties to oxygen, water vapor and aromatic gases. The multilayer structure may include an exterior layer having a metal oxide deposition laminated to an interior layer through use of an adhesive. In one embodiment, the metal oxide is SiOx where x has a value between 1.5 and 2.2 thereby allowing for a transparent multilayer structure. The metal oxide may be deposited on the exterior layer through a number of various methods. An exemplary method is plasma-enhanced chemical vapor deposition. The exterior layer may be composed of a polymer material integrated with a clay mineral between 0.1% and 10% weight of the polymer material. The polymer material may be selected from the group consisting of polyamide, polyethylene terephthalate, copolymers of polyethylene terephthalate and mixtures thereof.

REFERENCES:
patent: 5085904 (1992-02-01), Deak et al.
patent: 5102948 (1992-04-01), Deguchi et al.

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