Flexible package

Claim 1

A package comprising, a pair of separate opposed sheets of congruent outline shape fitted together in face-to-face relation and interengaging except for materials therebetween in certain areas as specified hereinbelow, the sheets being sealed together in face-to-face interengagement along a non-peelable line extending around the periphery of the package, the sheets also being sealed together in face-to-face interengagement along a septum line extending across the package at a mid-portion of the package and interconnecting at its ends with opposed elements of the periphery sealing line at the edges of the package, the septum line forming chambers respectively on opposite sides thereof and the package containing said materials in the respective chambers for intermixing, the septum sealing line upon being peeled eliminating barrier between the chambers and forming a single large pocket enabling intermixing of the materials, the mid-portions of the opposed sheets being effectively interengaged in flat relation at said septum line, the septum line including a central single linear portion and a pair of curved elements at each end diverging longitudinally outwardly and interconnecting with the respective elements of the periphery line at acute angles to the latter and constituting the elements by which the septum sealing line interconnects with the periphery sealing line, the curved elements of the septum sealing line facilitating peeling action of the latter, wherein the force utilizing in peeling the septum sealing line at the central portion of the package is propagated through the curved elements fully to the periphery sealing line, all elements of the septum sealing line lying in a common plane between the sheets.