Method of producing a filled package

Claim 1

A METHOD OF PRODUCING A CONTAINER FILLED WITH POURABLE CONTENTS, COMPRISING THE STEPS OF: SEVERING A LENGTH OF GUSSETTED AND FLATTENED SEMI-RIGID THERMOPLASTIC TUBING FROM A WEB OF SUCH MATERIAL HAVING INWARDLY FOLDED PLEAT-LIKE GUSSET PORTIONS ALONG EACH OF ITS OUTER LONGITUDINAL EDGES, CLOSING SAID LENGTH OF MATERIAL AT ONE END AT LEAST BY A HEAT SEALED SEAM, GRIPPING ONE OUTER FOLD OF EACH FOLDED PLEAT-LIKE GUSSET PORTION ON ONE SIDE OF THE CONTAINER IN THE VICINITY OF THE UNSEALED END OF THE CONTAINER, INTRODUCING A NOZZLE INTO THE OPENING THUS LEFT BY REASON OF THE OTHER OUTER FOLDS NOT BEING GRIPPED, CLAMPING THE FREE SIDE OF THE OPEN END AROUND THE NOZZLE AND AGAINST THE GRIPPED EDGE SO AS TO RENDER THE CONTAINER SUBSTANTIALLY FLUID TIGHT, INTRODUCING FLUID UNDER PRESSURE THROUGH SAID NOZZLE AND APPLYING A MECHANICAL COUNTER PRESSURE AGAINST THE HEAT-SEALED END OF THE CONTAINER DURING THE INTRODUCTION OF FLUID UNDER PRESSURE TO STRAIGHTEN SAID FOLDED PLEAT-LIKE GUSSET PORTIONS TO FORM SIDES OF THE CONTAINER WHILE FOLDING OVER THE TAIL PORTION FORMED BY SAID HEAT SEAL AND BLOCKING OUT THE HEAT-SEALED END OF THE CONTAINER, INTRODUCING THE POURABLE CONTENTS INTO THE BLOCKED OUT CONTAINER, AND CLOSING THE CONTAINER.

Claim 2

A METHOD OF PRODUCING A CONTAINER FILLED WITH POURABLE CONTENTS, COMPRISING THE STEPS OF: SEVERING A LENGTH OF GUSSETTED AND FLATTENED SEMI-RIGID THERMOPLASTIC TUBING FROM A WEB OF SUCH MATERIAL HAVING INWARDLY FOLDED PLEAT-LIKE GUSSET PORTIONS ALONG EACH OF ITS OUTER LONGITUDINAL EDGES, CLOSING SAID LENGTH OF MATERIAL AT ONE END AT LEAST BY A HEAT SEALED SEAM, GRIPPING ONE OUTER FOLD OF EACH FOLDED PLEAT-LIKE GUSSET PORTION ON ONE SIDE OF THE CONTAINER IN THE VICINITY OF THE UNSEALED END OF THE CONTAINER, INTRODUCING A NOZZLE INTO THE OPENING THUS LEFT BY REASON OF THE OTHER OUTER FOLDS NOT BEING GRIPPED, CLAMPING THE FREE SIDE OF THE OPEN END AROUND THE NOZZLE AND AGAINST THE GRIPPED EDGE SO AS TO RENDER THE CONTAINER SUBSTANTIALLY FLUID TIGHT, INTRODUCING FLUID UNDER PRESSURE THROUGH SAID NOZZLE AND APPLYING A MECHANICAL COUNTER PRESSURE AGAINST THE HEAT-SEALED END OF THE CONTAINER DURING THE INTRODUCTION OF FLUID UNDER PRESSURE TO STRAIGHTEN SAID FOLDED PLEAT-LIKE GUSSET PORTIONS TO FORM SIDES OF THE CONTAINER WHILE FOLDING OVER THE TAIL PORTION FORMED BY SAID HEAT SEAL AND BLOCKING OUT THE HEAT-SEALED END OF THE CONTAINER, INTRODUCING THE POURABLE CONTENTS INTO THE BLOCKED OUT CONTAINER, AND CLOSING THE CONTAINER.