Abstract A package for a two component system which requires separate, secure storage with rupture of an internal seal to permit mixing of components at the time of use is provided by having at least one and preferably three, ultrasonic seals dividing a laminate film package into compartments, with a perimeter heat seal around the edges of the package, and which seals the ends of the ultrasonic seals after formation. The space between the ultrasonic seals is a security compartment, and may contain a dye to indicate leakage into the compartment. The compartments contain components for resins, pharmaceuticals, or chemiluminescent systems, or the generation of heat, generation of cold, or photographic processing solutions. Ultrasonic sealing permits a reliable chemical proof seal of predictable and controllable rupture characteristics. The two compartments contain storage stable components, which react on mixing. The compartments can be generated continuously from continuous strip material in rolls, with edge and barrier seals being continuously formed, and filling nozzles extending into the tubes formed by the sealing. By severing and sealing, a series of double filled compartment packages are continuously formed.
A plural compartment mixing package fabricated of a flexible laminate, at least the inner layer of which is thermoplastic, and which seals to itself on heating and at least one stronger adjacent layer which has a higher melting point, fabricated into a plurality of separate compartments, a fluent material in at least one of said compartments and a second material in another compartment, said fluent material and said second material being mixable at a time of use, but being non-compatible on storage, said laminate being strongly heat-sealed around the periphery of the compartments, and being separably sealed between said compartments wherein: a. the separable seal consists of at least three separate ultrasonic seals, forming security compartments between these separate seals which tend to prevent and to show any compromise of security of the ultrasonic seals, between flat undisturbed portions of the laminate, with later formed heat seals overlapping the ends of said ultrasonic seals and in leaktight juxtaposition thereto; b. at least part of the laminate forming one such security compartment being transparent, and c. a highly colored soluble dye in said one security compartment having said transparent part, whereby it leakage into such compartment occurs, the dye is dissolved, and becomes readily visible.
Claim 2
Dependent Claim
204 words
A plural compartment mixing package fabricated of a flexible laminate, at least the inner layer of which is thermoplastic, and which seals to itself on heating and at least one stronger adjacent layer which has a higher melting point, fabricated into a plurality of separate compartments, a fluent material in at least one of said compartments and a second material in another compartment, said fluent material and said second material being mixable at a time of use, but being non-compatible on storage, said laminate being strongly heat-sealed around the periphery of the compartments, and being separably sealed between said compartments wherein: a. the separable seal consists of at least three separate ultrasonic seals, forming security compartments between these separate seals which tend to prevent and to show any compromise of security of the ultrasonic seals, between flat undisturbed portions of the laminate, with later formed heat seals overlapping the ends of said ultrasonic seals and in leaktight juxtaposition thereto; b. at least part of the laminate forming one such security compartment being transparent, and c. a highly colored soluble dye in said one security compartment having said transparent part, whereby it leakage into such compartment occurs, the dye is dissolved, and becomes readily visible.