Package system

Claim 1

A package system for mutually mixing a plurality of materials separately contained in hermetically sealed relation, comprising in combination: pouch means having compliant side walls comprising a pair of facing coplanarly disposed film strips each including a heat sealable interior lamina and a non-heat sealable exterior lamina coplanarly bonded thereto, the interior laminae being heat sealed along a common boundary and adjacent the peripheral edges thereof to define first and second storage chambers in the form of a flattened tube, the exterior laminae being substantially impervious to the respective vapors of the materials stored in the chambers and to the effects of ambient air from without on such materials, and the common boundary comprising a portion transverse to the long axis of the tube wherein the facing surfaces of the interior laminae are sealed together in a common plane with an unsealed portion defining a flexible narrow flattened conduit communicating the chambers across the common boundary; a fold formed in the common boundary, said fold being disposed on a line placed transversely of the conduit for closing same by forming a king thereacross to initially isolate the respective chambers for storing the materials therein and subsequently opening the conduit by flattening the fold to remove the kink and intercommunicating said chambers for controllably combining the separated materials and mixing same by kneading the side walls; and at least one aperture disposed in one strip on each side of the fold line such that corresponding pairs of apertures enter into registry within the fold, whereby the heat sealable lamina of the other strip is communicable through the corresponding pairs of apertures to permit heat sealing therethrough for maintaining the fold to effect closure of the conduit.