Method of forming flexible packages and novel flexible packages

Details Method of forming flexible packages and novel flexible packages Method of forming flexible packages and novel flexible packages

1989-03-13

1989-11-28

Ivy, C. Warren

Stock material or miscellaneous articles

Hollow or container type article

Nonself-supporting tubular film or bag

428 343, 428 353, 4284231, 4284248, 1563317, 2065246, C09J 316

Patent

active

048836940

ABSTRACT:
High performance polymer systems based on water dispersed polyurethanes obtained from the reaction of NCO terminated prepolymers with a peroxide compound containing at least one active hydrogen atom, methods of making such polymer systems and their use as hydrolytically stable flexible substrate bonding agents are disclosed. Flexible packages, e.g., retortable laminate pouches, are formed by bonding together sections of films, foils or like flexible substrates using such adhesives.

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