Multilayer film structure and packages therefrom for organics

Details Multilayer film structure and packages therefrom for organics Multilayer film structure and packages therefrom for organics

1996-11-25

2000-09-19

Clardy, S. Mark

Stock material or miscellaneous articles

Hollow or container type article

Paper containing

428 343, 428 352, 428 353, 428 354, 383211, B29B 108

Patent

active

061208604

ABSTRACT:
Multilayer film structures and packages therefrom which are particularly suited for containing organics such as organic liquids or solvents, e.g., amines, diamines, triamines, xylenes, tolene, ethoxyethanols, urethanes, or epoxies, or the like, or materials containing organics are disclosed as are methods for containing such organics. The film structures have two layer elements. The first layer element has a flexible barrier material layer and a sealant layer; the second layer element has a high barrier material layer; and when formed into a package such as a pouch the sealant layer is disposed interiorly and is used to seal the package together. Suitable materials for the high barrier material include metal foil, e.g., aluminum foil, and nylon coated on at least one side with a polyvinylidene chloride copolymer; the flexible barrier material layer is suitably nylon; and, the sealant is preferably ethylene vinyl acetate. Additional layers such as additional primer, adhesive, tie or sealant layers can also be present as can at least one protective layer disposed over the high barrier material layer. The packages of this invention can contain the organics in varying conditions, including elevated heat and/or humidity, without blistering, bubbling, cracking or product permeation.

REFERENCES:
patent: 4085244 (1978-04-01), Stillman
patent: 4284672 (1981-08-01), Stillman
patent: 4284674 (1981-08-01), Sheptak
patent: 4405667 (1983-09-01), Christensen et al.
patent: 4795665 (1989-01-01), Lancaster et al.

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